Telkom Deducting money with out permission

Good day,my name is ruhana permall,I have taken out a contract with Telkom for a few years now,it was a wfi contract,witch I have experience Manny problems with,and I have contact there office with Everytime a different consultant spoke to me but did not sort out my matter,I paid my acc every month up to date but has not experience the quality of the product with was advertised to me,when I contacted them a lady told me because I am experiencing poor singnal she think it's better if I let them out a pole in my back yard,but then I said no I don't want to do that,and that my router don't work probly and that I want them to attend to this matter,then I still paid but for a few months I had no wfi but was paying my instalment each month up to date,then there lawyer contacted me and said that I own them R8000 but I then told them how can that be when I did not use the wfi for a few months because I had no signal and it was off,then I notice the money in my ACC was taken by the lawyers with out my permission and I then reverce my money back because how could they take money from my account with out my permission and when I did not use the wfi for a few months,now I don't know how to deal with this matter and really need some advice forward regards to this matter because now my hole bank account has been interpted due to this where my other accounts for payments was due and could not deduct due to tellkom doing this to me I need them to contact me and attend to this matter urgent please. Regards Rushana permall Contact Nr: *** I'd : nr *** Email address:***