Charging me for a service I never asked for

Telkom is billing me for a service I never asked for nor want or can use. They are charging me for some weekender plan that i refuse to pay for as I never requested nor gave permission for it to be given to me. All I asked for was an ADSL line I don't even own a telephone to make phone calls. now i get a sms saying they are going to suspend my ADSL service if I don't pay for the weekender part of my bill that I never wanted. I expect my account to be credited and this charge reversed asap and don't dare suspend my line due to incompetency on your side. I have gone online and reported this and have had no response since either. I'm really tired of fighting with you people now.