mtn contract issues

My MTN contracted has been suspended due to the fact that I've changed banking details and my new bank somehow did not change my details with Mtn. After realizing that my account has been blocked, I tried getting in touch with MTN via there infamous 808 number. By calling this number I get thru to an automated voice system which eventually puts me through to an MTN agent. This however does not happen, the system drops the phone after about 4 rings. So, fed up with the 808 system I sent MTN an email stating that my account is in arrears and I don't know how much the amount is which is to be payed. About 3 days later I received an email stating that the amount payable is about R1900, which a paid and I sent the copy of payment to the same email address from which I received the earlier email. Its has been roughly about 3 weeks now, my service is still suspended, I've emailed them again asking that they'll reopen my line. This however has helped nothing! So now I'm sitting with a paid account for 3 different cellphone numbers of which not even one of them are working. I phoned the 808 number again, only to find out the service consultant service is now suspended. Please help!!