Paying for contract that does not receive service

I purchased a data contract from Autopage in Sep 2014, Cell C could not service the contract due to signal problems in my area. They requested Autopage to cancel the contract on Jan 22 2015 via a letter. No response was given from Autopage to my numerous calls an emails until Mar 11 at which tine Zain Hendriks called me to discuss a device that came with the contract. I explained that the device is new because the contract was never serviced. He was supposed to have called me back within 3 days, I am still waiting. I am being debited every single month for a contract I cannot use. Autopage has not returned my calls or responded to my emails sent two weeks ago. Zain explained that the contract is in fact cancelled but I am still being debited. This is the worst service I have ever received from a cellphone provider, it makes you think twice about ever taking a cell phone contract again.