Stop *****ing from me and give me my money back!

I have been trying to cancel my data account since December, the contract was due to expire. I have phoned and asked for the cancellation at least 7 times yet they still continue to take money off of my account each month without my permission. Each time I call they don't have records and say they will escalate but nothing gets done. I can't tell you how many people and hours I've spent getting fobbed off from one department to the other only to get placed in hold for long periods and then my call gets cut. I've asked for a refund for the money they have taken without my permission but each time they can't find the request and I need to do it again. Just woke up to see that after spending an hour on the phone with them yesterday they have take money off my a count again today! The call centre staff treat you like a number and just read off scripts, and have no power or ability to meet the clients needs, noone does anything and I feel it it intentionally being done to continue to avoid responsibility for their ********* and ******* behaviour. No words to describe the despair and despondency they have made me feel because this is not the only issue I've had with them on mobile, data and fiver contracts. I wish I was over exajerating when I say they gave found a way to ***** me over on every opportunity with no consequences for them. Can't wait to be done with Vodacom forever I will ever support them in any way moving forward.