double debited for 3 months now

An additional benefit was added on my existing contract without my knowledge, what I recalled was a consultant who called and said 'this is a courtesy call to check if your details has not changed since the tracker device was fitted, also to inform me of my benefits available for the 1st August , you will be checking for my speeding tickets, also help me obtain discounts."

the next thing an additional benefit was added on my contract, I complained about this in august and I was told that benefit will be remove in August and I will be refunded. Its now October and I have not received that refund, to make things worst is that they double debited m for August, September and another double debit now in October.

I have lost track of the number of emails I have sent to them and they've been promising to sort this out and refund me. Cancellations department also called me last month to confirm the cancellation of that benefit but that didn't stop them from debiting me for that same benefit that they called to confirm that they have cancelled.

how crazy is that? seriously their service is sickening.