I Have Paid

I am a Mtn contract customer, my account is up to date. Mtn have been blocking my outgoing calls once a week for the past two months because they say my account is in arrears. I have phoned customer care 6 time to notify them that my account is up to date, I have also emailed Sibongile at customer care the proof of payments for the months that they say I am in arrears. The problem stays. when I phoned last week to confirm that they got the proof of payments, they said they cant help me anymore as I have been handed over to the lawyers, they said they cant fix the problem with the lawyers and that I now have to sort it out with them. The number that they gave me for the lawyers does not work. I have tried phoning head office they say they cant help me and that I must speak to customer care. I received another sms this morning that states that they will be blocking my phone again. PLEASE ASSIST a desperate customer.