Deducting money from my bank account

Hi there<br> <br> From December 2014 Ive been having problems with my contract at Cell C, my Sim has stop working for no reason and every time I go to the nearest Cell C shop they make me do a Sims overtime of R150.00 at a time.<br> after phoning them repeatedly the collected my Phone and it came back with the same problem.<br> <br> I have spoken to them more than 40 times a day if they did not transfer me to different departments All day long, and still they said just do a simswap..<br> <br> After the 4th Simswap I called them and said I'm no longer interested in the service.. Went to the bank and put a stop order because the deduct money from my account for my contract but I don't even get to use my airtime, data and so forth because the sim is inactive and not registered. please note this is after 4 simswaps of R150-00 each time I had to replace the sim..<br> <br> They also debit my account 3 to 4 times a month..<br> <br> I'm so sick and tired of their ****ty attitudes and service...<br> Can you please be so kind and assist me in this matter..<br> <br> Best Regards<br> Annatjie Goosen<br>