Debiting my Account 4 months after cancellation

I am losing hope with Telkom!<br> <br> I have Cancelled my internet contract in January already and they are still debiting my account monthly. I have forwarded my request for cancellation numerous times to people at the call centre who always assure me that they will rectify this!<br> <br> Telkom still has the Audacity to call me to discuss upgrading my contract as it has expired!!!!<br> <br> I cant deal with this anymore!!<br> <br> This is *******! What on earth must I do!<br> <br> NEVER USE TELKOM! Terrible Signal and terrible service!!!