| 121 | Customer Service for Query | Tk.0.50 / Min | 
| 158 | Customer Service for Complaint | Free | 
| inst@bill.grameenphone.com | Get postpaid bill update instantly. Send mail with mobile number and Account ID number in subject with # as separator [e.g 017xxxxxxxx#1.1xxxxxxx ] | Free | 
| Chat with Customer Service Live | ic-web.grameenphone.com | Free | 
| 01711594594 | Hotline for calling from other operator numbers | As per operator's tariff | 
| +8801710100121 | Customer Service hotline for GP customers while in roaming | As per roaming networks tariff | 
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