Payment reallocation

I am so disappointed by the leave of customer service I have received when trying to sort out my bill.

I have made a card payment in the cape town store on the 27/09 , On the 06/10 I went back to the store to do an upgrade, only to find out that I am in arrears, I explained that I made payment and showed my bank statement as proof of payment, Only to find out that the payment was made to a number that had been transferred out of my account (my sisters account) . I was advised that they would escalate the matter so they can transfer the funds to my account and that it would take 24/48 hours. I called the customer service on the 9/10 who advised that the matter is till under investigation, which was fair enough, I called back on the 11/10 who advised that there was still no feed back, however she would be raising a payment allocation case and it would take 12/24 hours . In this time I have already received sms stating I should make payment immediately to avoid suspension , another stating my credit score will be affected. I called back on the 13/10 and again there has been no feedback,Called on the 16/ and still Nothing. On the 17/10 my phone was suspended call customer service who restored my services as the investigation was still on going. I call back on the 19/10 only to be told that the escalation that was raised was done incorrectly and nothing is going to happen, and that I need to go back to the store that had originally raised that escalation and they need to redo it. After calling so many time and no one could tell me that the escalation raised was done incorrectly. I went back to the store in cape town and another escalation was raised and I have no idea if it was done correctly or if this will ever get sorted . I have now received my October will which is almost double the amount, all because they can not allocate the payment back to my account.