Telkom robbing clients

I'm so ****ed off with Telkom they are robbing us. January I paid about 1400 which resulted in me having a credit of R200 then by the end of February I had to pay R400 according to their statement. I didn't pay the R400 immediately they suspended my line. What ****ed me off every time I'm calling the customer care line I'm being cut off. Firstly when I was renewing my contract with them I specifically said I did not want them to debit my bank I was going to pay cash but they debited an amount of R800 from my bank in January and that was the reason I had a credit of R200 also I specifically asked them to take out Prime because I don't want it but every time in my statement there's an amount of R79 of Prime which I asked them to take it out.