cancellations

HI I completed a 24 month contract with telkom mobile , I told them not to continue it 2 months before it was completed which was FEB 2015 ,I even told them to suspend the line which they did ,but I kept paying the monthly rate which was R78.00 AFTER FEB 2015 they continued billing me now R90,00 p/m I CALLED (081180) asking them to cancel ,,they said i should fill in a cancellation form ,which was sent to me I filled it in and sent it to the email they gave me I called saying its sent . I was told it would take 21 working days to be cancelled . It was not cancelled I called again they say because i was uncontactable I then re sent it and added 8 numbers for them to contact me ,still nothing , I kept calling until i was so angry I was rude to them I was then told it will be <br> cancelled . I re sent everything again ..IN ALL THESE MONTHS THE LINE IS SUSPENDED UNDER MY REQUEST ,,,SO up to now I'm still being deducted every month R90,00 for 8 months ..please help me cancel this account I have the cancellation letter and PROOF OF EMAILS hopefully regain my money I've paid for no reason I've done all they asked ,,,,PLEASE HELP.