Change debit order dates because of their cash flow issues

After moving my debit order in December without my consent, I have now been struggling for 3 months to get it resolved. They do not respond for months, claim to loose communication, and confirm that they have changed my account to cash without having done so. When you request to speak to somebody about the bad service they insist on putting you through to credit control who caused the problem in the first place. They also very quickly try and claim that certain things are provided for the in the contract, but when you ask them to substantiate it they simply do not answer. Now because I have been told that my debit order was cancelled, and I paid my account to keep it in good standing. This resulted in both my payment and their debit order being processed. I now how to pay the bank to reverse their debit order and I have still not received any feedback. Great strategy to get rid of your customers who have paid you every month for over 2 years because you are worried some might not pay you in December. For a company who you need to trust will recover your vehicle when you have a problem, their customer service inspires no confidence at all