Trying to sort out a cancelled account

I cancelled the tracker on vehicle in September 2014, as the vehicle was sold. I was given options for cancellation yet received no banking details to settle, also received no invoicing. I have since then tried to sort this out as there is still a debit order going off my account. I dealt with Ghitte, plus two other call centre people before her, on Thursday and Friday and was assured I would have a answer on Monday. I requested a statement showing payments debited on my account and how this would influence the settlement amount. I also requested a copy of documentation I signed with them. I have sent emails this week looking for a response and also phoned today. To date I have received no response. yet tomorrow there will be another debit order going off my account.<br> <br> assistance in sorting this out would be appreciated.<br> <br> Regards<br> <br> Vanessa<br> <br>