Vodacom *****ing Money from my account for 5 mnths

I have ENDED my data bundle 2 year contract with Vodacom in NOVEMBER 2014.<br> Now, in May 2015, Vodacom has deducted the contract amount debit order for 5 consecutive months *******LY.<br> I have called them, emailed them and have been on the phone numerous times over the past few weeks, and STILL no one can give me answers or tell me when my money will be paid back that they are *****ing from me.<br> <br> Further more, to stop any more debit orders going off from my account, Vodacom now asks me to actually send through my ID document and cancellation letter to CANCEL my contract - HOW CAN I GET IT THROUGH THEIR THICK HEADS that my contract was CANCELLED in NOVEMBER already and that I reFUSE to send though a cancellation letter as this will mean that I actually accept what they have been *******ly doing for the past 5 months.<br> <br> SERIOUSLY angry and frustrated about the blatant ***** and ******* services.