Simple Cancelling of a contract is a nightmare

2 weeks ago i went into a Telkom store, was assisted by a consultant, went home & my device wasn't working, than i went back & told the consultant i want to cancel the contract because i still have no connection, was advised that they are not able to assist me i must do it on the Telkom website, left came home struggled to get any help to cancel my contract, low & behold got an sms yesterday congratulating me on my contract, i want to cancel this contract is this so difficult, is there anyone that can help me????? your service is pathetic, i am so disgusted in your service