Bad Service

Last end August - 2020 , I paid my account as normal . But in the first day of Sept Mtn blocked my account for any reason , as I was in a hurry with my wife in hospital , I decided to pay the account again, the account continued blocked until 7/09 , when I decided to call to MTN to reopen the account . So, today 17/09 , they locked the account again , so I have to call MTN again to unblock the account and lady in that side is keeping saying that I never paid the account . I sent the proof of payments 4 times since end of August , and MTN coould not allocate the money in the account , this is a really bad service provided by MTN.