Formal Complaint Regarding MTN Service Disruption

Hello Peter,

I hope this message finds you well.

I would like to formally lodge a complaint regarding my service provider, MTN. My cellphone number, ***, was working perfectly fine until last week when it suddenly changed status to "Unregistered SIM." Since then, I have been unable to make or receive any calls.

I’ve contacted MTN’s call center multiple times using an alternative number, but unfortunately, the assistance I’ve received has been extremely poor. The call center agents keep giving me different stories and repeatedly ask me to switch off my device for a certain period — yet, after doing so, the issue remains unresolved.

This has now become a serious inconvenience, as I am missing important calls and communications. I would like MTN to provide a clear explanation as to why my SIM card has been blocked or changed to an "Unregistered" status without any prior notice or valid reason.

I kindly request urgent assistance and a proper resolution to this matter. Please also escalate this issue to the relevant department if necessary