I'm in Bangladesh now, and a week ago I bought a Grameenphone SIM card (voice + data). I recharged it yesterday and now I can't use it (it says "service suspended"). I am sure I have enough credit; I registered using my passport so that shouldn't be a problem. Do you have any guess on what happened, and tips on what should I do?
If you have internet access then visit Grameenphone's (GP) website.There is a Live Chat option to talk with their representative.Use your GP number and Name before starting the chat. Or you can email them at Insta.firstname.lastname@example.org describing your problems along with your phone number and passport number.
You can also visit the nearest Grameenphone center with your SIM. They can reconnect your number.