Poorest level of service from MTN SA

I have been with MTN for many years and have not had any issues up until last year October, I have experienced the worst service from MTN ever. Since October, I have been having an issue with my service getting disconnected every month when my payments are up to date but MTN keeps saying that my account is not paid up. Proof of payment has to be sent every month from October last year to show that the account is up to date. My services get suspended for atleast two weeks before they resolve the issue by saying that the payment is reflecting on their old system but not the new system. I do not understand how is this my problem if your systems are not reflecting the payments correctly. They take our money but can't provide a good level of service as an ISP. That's 2100+ a month but can't use my cellphone or sim because it gets blocked and no compensation. I have been in emergency situations where I can't use my phone because it is blocked and then MTN has the nerve to say that "We care"? How? This matter has been escalated so many times just to hear the same thing every month from MTN. Fix your systems and stop making it your customers faults and having them suffer. MTN, your level of service is very poor for a leading ISP. It's very sad and shocking to see this is how loyal and long lasting customers using your network is being treated the way they are.