Contracts cancelled within cooling off period, BILLED, NOT CANCELLED, NO GOODS DELIVERED

I was phoned by CCI-SA consultant on the 07 August 2017 to upgrade my 3 kids' contract that has already expired. I explained to the consultant that she can call me by the end of as I will be leaving on the 12 August 2017 for two weeks. She said that delivery of the new handsets will be the latest on the 11 August 2017. I was billed on the 08 August 2017 with the new amount. I was then feeling happy because everything is going smoothly......... BUT ............ on the 11 August 2017 at 16h15 I phoned CCI-SA to find out about handsets. I was then told that these contracts are still at PRE-APPROVAL. BUT I WAS BILLED BY MTN FOR THE NEW AMOUNT ON THE 08 AUGUST!!! I then made use of my right to cancel these contracts within the cooling of period. This was explained to me by the consultant that phoned me to upgrade the contracts. The couriers phoned me on the 16 August 2017 (while I was away) to confirm my delivery address. They want to deliver the handsets. NOT CANCELLED!!!! After numerous phone calls and e-mails are the contracts still cancelled and was I billed in September 2017 for the new amount again. CCI-SA says that MTN have problems with their system. They confirmed that the handsets were returned to the MTN warehouse but due to the problems on the MTN system can they not get a RMA number from MTN. The contracts can only be cancelled once an RMA number is received from MTN. I got e-mails from CCI-SA confirming the problems MTN is experiencing on their system. I asked them for a person that I can contact to speed this up as one of my kids now urgently needs a new handset and can upgrade at our local MTN shop.