Globacom Customer Care Number: Complete, Practical Guide (Nigeria, 2025)

Globacom (Glo), launched in 2003, serves over 60 million mobile subscribers in Nigeria. If you need quick help with billing, SIM/NIN issues, data plans, or network faults, the fastest route is the official customer care line from your Glo phone. Below you’ll find the exact numbers, how and when to use them, alternatives if you can’t place a call, and practical tips to get your issue resolved on the first contact.

The Official Glo Customer Care Numbers

The primary Glo customer care number is 121. Dial 121 from any Glo line to access the interactive voice response (IVR) and speak with an agent. The line is designed to be toll‑free for Glo subscribers within Nigeria and is available 24/7, including public holidays. Use this number for all account types (prepaid and postpaid) and for services such as SIM registration updates, data activation, value‑added services (VAS) issues, roaming queries, and balance/billing disputes.

In addition, Nigeria’s regulator (Nigerian Communications Commission, NCC) introduced harmonised common short codes in 2023. As of 2025, 300 is the cross‑network customer care short code. Dialing 300 from a Glo line will route you to Glo’s customer care IVR in the same way as 121. If one code is congested, try the other. For unresolved complaints after first-line support, you can escalate to the NCC on 622 (toll‑free from all networks within Nigeria).

Essential Glo support numbers and self‑service codes (Nigeria)

• 121 — Glo Customer Care (toll‑free on Glo lines, 24/7)
• 300 — Harmonised Customer Care (NCC common short code, 24/7)
• 622 — NCC complaints escalation (toll‑free; use after you’ve lodged a complaint with Glo)
• *777# — Glo USSD for bundles and self‑service (voice/data/SMS offers, caller tunes, etc.)
• *124# — Airtime balance check on Glo
• *127*0# or send “INFO” by SMS to 127 — Data balance check on Glo
• 311 — Harmonised recharge code (dial 311PIN# for e‑PIN top‑up; replaces legacy recharge codes)
• 312 — Harmonised data plan purchase code (browse and buy data from USSD menu)
• 305 — “STOP” code to cancel value‑added services (VAS) per NCC common short codes
• 996 — NIN-SIM linkage/verification (national unified code; follow on‑screen prompts)
• 112 — National emergency number (not Glo-specific, but important for safety emergencies)

Hours, Costs, and What to Expect When You Call

Glo’s customer care (121 or 300) operates 24 hours a day. Peak traffic periods are typically weekday evenings (7 pm–10 pm) and early Monday mornings. If you prefer shorter wait times, call mid‑morning (9 am–11 am) or mid‑afternoon (2 pm–4 pm). You can navigate the IVR quickly by choosing the menu option closest to your issue (e.g., “Data,” “Billing,” “SIM/NIN,” or “Roaming”).

Calls to 121/300 from Glo lines within Nigeria are intended to be toll‑free. However, when you are roaming outside Nigeria, toll‑free treatment may depend on the visited network; roaming voice charges can apply. If you are travelling, consider using online channels (website chat or social media direct messages) to avoid potential roaming costs.

Alternatives to Calling (If You Can’t Reach 121 or Prefer Digital)

If you can’t place a call, use Glo’s online support. Start at the official website: https://www.gloworld.com/ng, then navigate to “Support” or “Contact.” You’ll usually find a live chat option and web forms to submit complaints or requests with attachments (e.g., screenshots of failed recharges). Keep your Glo number and a brief description of the issue handy.

Social support is active on official handles. On X (Twitter), send a direct message to @GloWorld; on Facebook, message the verified “GloWorld” page. Do not share full SIM serials or NIN publicly—only in private messages when asked by verified agents. For in‑person help, visit a Glo World retail outlet; use the store locator on the website to find the nearest shop. The corporate head office is Mike Adenuga Towers, 1 Mike Adenuga Close (off Adeola Odeku Street), Victoria Island, Lagos, Nigeria—useful if you’re sending formal correspondence.

Calling From Abroad or While Roaming

While roaming with a Glo SIM, you can often still dial 121 or 300. If the visited network does not support toll‑free routing, the call may attract roaming charges. A practical approach is to try the website live chat first when abroad; you’ll avoid voice roaming fees and can share documents easily.

If your SIM cannot register on a roaming network, first try manual network selection in your phone settings, then reboot and try again. You can also contact Glo via social channels with your Glo number, country, and the networks you tried to latch onto. Glo’s website lists roaming partners and standard roaming advice under its roaming section; check there for country‑specific notes before you travel.

Prepare These Details Before You Call (To Speed Up Resolution)

• Your Glo mobile number (MSISDN) and full name as on your SIM registration (NIN-linked details if applicable)
• SIM details: last 4–6 digits of the SIM serial (ICCID) printed on the card, or PUK if you have it
• Recent activity for verification: last recharge amount and date, last two numbers you called, or your current tariff plan
• For data/device issues: phone model, software version, and IMEI (dial *#06#)
• Fault specifics: exact error messages, affected location(s) with landmarks, and timestamps of failed attempts
• For NIN/SIM matters: your NIN (11 digits) and confirmation of any earlier linkage attempts (e.g., via 996)
• For billing disputes: screenshots or SMS receipts showing charges, data bundle codes, and dates

What You Can Resolve Quickly via 121/300

Most common issues can be resolved in one interaction: bundle activation failures, incorrect or double data charges, caller tunes/VAS cancellations (you can also use 305 to “STOP” VAS), SIM PUK retrieval, tariff plan migration, and help with USSD errors on *777# or the harmonised codes (311/312). Agents can also push network refreshes to your line if you’re having trouble attaching to 3G/4G, and they can log coverage complaints tied to a specific location.

For regulatory or identity matters, agents guide you through NIN linkage (996), SIM swap procedures for lost/stolen SIMs, and documentation needed at a Glo World shop. If you’ve tried 121/300 and still have a documented unresolved case after the timeline Glo gives you, escalate with your complaint reference number to the NCC on 622. Keep every reference number and any SMS/email acknowledgements; they’re essential if escalation becomes necessary.

Practical Tips to Get Faster Help

Use the correct channel for the problem: for quick bundle purchases or balance checks, self‑service USSD (*777#, *124#, *127*0#) is fastest; for complex billing or SIM/NIN issues, call 121/300; for attachments (screenshots, IDs), use website chat or submit a web form. Always ask the agent for a case ID before ending the call, and request the expected resolution time.

Finally, be mindful of peak hours and roaming costs, and verify you’re contacting official Glo channels. Bookmark https://www.gloworld.com/ng and the verified @GloWorld handle. With the numbers and steps above, you’ll be able to reach Globacom customer care promptly and resolve most issues without repeat calls.