LTE Internet 50GB + 50GB

Numerous times I have tried to sort out my Telkom account (over a period of 8 months), but always come to a dead end with no solution. Every time I open a case number they promise to resolve it, but then send me a sms a few days later stating my case has been closed with no feedback whatsoever. I never received my internet device or sim, thus I was never able to use it, but still Telkom bills me every month and takes debit orders the one after the other. Even the operator on the phone has told me they can see their was no usage at all which proves I do not have the device. Telkom even took 3 debit orders this month to the amount of R4,186.00 which I had to pay the costs of reversing with my bank - R50.00 per debit order and there was 3!! I have phoned and explained that I never received my device, but still they bill me. They have also now ruined my credit record!! I demand that my account be cleared and my credit records be corrected!!!