I AM BEING BILLED FOR A PHONE I DONT HAVE

I app**** for a contract phone with telkom and i received and started using it on the 8th of May 2015 but on their records it was saying i started using it on the 28th of April 2015. In May i was billed R 908.90 while i was not suppose to be billed at all as i was suppose to receive a pro-rata for May and start paying in June, I open a case on the 18 of May 2015 and i was told to go to the store were i had bought the phone and ask for the agent who helped me apply for the phone to confirm what i was saying and that was done. Every time when i call to ask for the progress of the case i am told the case is the pending.<br> <br> Now in June i received an sms informing me that i have to pay R 1474.64, when i called to enquire about this i was to it is because i have 2 contracts phone with them that i am paying. I told them that was not true as i only have 1 contract phone that i am suppose to be paying R 499 per month for it. I was than told to go make an affidavit confirming that i only have 1 contract phone and i did that and forwarded it to them. A fews days later a got an sms saying my contract has been closed but when i checked my balance due for the month of May it was still the same.