Cell C - Taking Money for Nothiing

During December 2014, I noted a 2gb data contract signed up through FNB's debit order went from R99 pm to R279 pm. When I phoned in, they explained to me the contract has lapsed, thus it automatically goes to the new rate. Even though I excepted it, I cancelled the contract during March 2015. Come month end, I noted they deducted the end of March again. I phoned in again, call ref ***. I then noted the debit order getting deducting on the end of April, May and received a bill this morning for June as well. I phoned Cell C this morning again and everyone keeps on sending me from department to department. It has been two weeks since my last enquiry, where they said they will get in contact with me in two days, it's 2 weeks and I had to phone again and spend 20 min on the phone. This is sooo poor, no wonder they have to buy clients out of their contracts, that's the only way they can get the clients on the database, and then they probably smoke them