Telkom must refund

I am customer residing in lephalale, I received a call from Telkom sales consultant who purchased a good product and liked it. Two days after receiving the package I realised that the area am in does not have telkom network of which it was not going to serve a purpose.I then called on the third day of receiving the package I was told to complete the cancellation form which I did and emailed it as communicated. but to my surprise I did not get any response and olso noticed that tgere is debit order going through for the same account. I called again this time I was being sent from pillar to post and was requested to email the form over n over again. I got tired of this exercise I decided to go to thier offices in menlyn mall since the did not have offices in lephalale. At thier office i was told they don't cancell contract there i need to do it online. I did go online as per instructions on the pamphlet they gave me. I got respond that I will be updated on the progress which till today I did not receive any. the debit order is still continue. I need assistance in cancelling the contract n also refund of all the monies paid since I never used thier service.