Utterly ridiculous

I have struggled with Vodam since March. I am charged for a contract that has run it's full term and when I call their customer care line I am put on hold for lengthy periods and then trains from one consultant to the next, none of whom are able to resolve my query. In April a deduction was made on my account which I called in to query and I was told that this was the last deduction for this contract. In May another deduction was made. I called in, spoke to 5 different people, and was eventually advised that I would be credited for the last two deductions as they should not have been made. Mind you this is a credit on my Vodacom account, not a credit to my bank account which the funds were taken from. In June a deduction was made AGAIN! This time for an amount nearly FOUR TIMES what was previously deducted. ARE YOU KIDDING ME!!!!!! I called in AGAIN, and to no surprise I was not able to get any clarity. Instead just another "escalation".