cancelled account

i opened a data contract on the 29 sep 2014 with a modem included for all network coverage.<br> the modem was to be used at enkangala area for my office work only to find out the area has no coverage both by Mtn or Telkom mobile so i went back to the shop and cancel the contract on the 06 Oct 2014.<br> I filled in cancellation forms and they were faxed to billing department the same day and I was billed prodata amount.<br> Telkom billed me from Oct 2014 until April 2015 and every month i had to call their call center and explain that the contract is cancelled whilst i have to go to the bank and reverse their transactions.I went to the shop three times spoke to more than six different people at the call center but the issue is still not resolved.<br> lately i am getting messages and computer calls from their attorneys, I want someone from Telkom to contact me or or this matter to be sorted out at the court once and for all.