pathetic service

In September I missed my payment on my normal debit date. I then received sms's from MTN and you suspended my phone. I received an sms with bank details to get my account back up to date, I then paid on the 14th to the account number given to me via sms. I phoned the call centre the next day and was told it could take 72 hours for the money to reflect. On Sunday the 17th I received an sms to advise me you were in the process of reactivating my phone, by Monday everything was sorted, This obviously means the money reflected, I then received an sms later in the month telling me my account would be debited R504 (double debit) I immediately called the call centre and they told me the money wasn't reflecting for September, if the money wasn't reflecting why would you re activate my phone??! I was told to email collections, which I did, no response, so when MTN debited the R504 at the end of September I reversed it as I was not in arrears, I did not miss a payment in September it was just late, I then emailed collections again and got replies from different people every time, asking me the same thing every time which was proof of payment. I literally attached the proof of payment along with screenshots of all the sms's I received every single time but I seemed to get an automated response and no one was assisting me. I even attached a recording that I had with one of your call centre agents. I now received ANOTHER sms telling me I would be double debited at the end of this month. I do not owe any money, I have the proof of payment for both September and October which as I said I have sent numerous times. I have asked twice via email to Sifiso to have a manager contact me as I just want the matter sorted, If I wasn't paying you, I would understand, but I am, this query has been going on for close to a month and I am tired of the pathetic service I'm receiving, I just want confirmation that everything is sorted, this really should have been done long ago.