Contract not cancelled, billing still running

I sent a cancellation letter on the 1st of January and the device was<br> removed from my vehicle on 29 February. I AGAIN phoned on the 29th to<br> confirm cancellation and the consultant assured me it was the case.<br> <br> I received YET ANOTHER invoice this morning for R180.09 for APRIL!!!!<br> <br> I looked at my bank account and did notice that my debit order has<br> still been running for a couple of times. I find this unacceptable.<br> <br> How do we resolve this? I expect reimbur*****t for the debit orders<br> that have been running since cancellation.<br> <br> I did everything that was expected of me and followed your rules. You are not keeping your part of the deal!<br> <br> Please advise!