Motor Financial Corporation - no customer service and no resolution to a serious complaint that might be seen as *****ulent

MFC did not follow protocol and allowed a dealship to settle my vehicle without my consent. I have been fighting with them for weeks and I can't get thru to management. The agent from their complaints department Clive has dealt with my complaint. He's rude and spoke to me in a ill mannered way on several occasions. I laid a complaint against him and asked not to deal with him anymore. Yet he continued to deal with my case and phoned me again. Speaking to me in the same rude and ill manner way as before. I asked to speak to management numerous times but I can't get thru to anyone senior to speak to at MFC. This has affected emotionally as it was hard enough to have to sell my car. How can MFC allow any car dealship to just settle a vehicle without any consent? This opens up so many doors for ***** and for ****** cars to be settled and paperwork for the vehicle will be received by whomever. I am beyond frustrated and MFC is continues to blame me and avoid the actual complaint which is...why did they not ask for my consent to make sure I was aware of it before a dealship settled the outstanding balance on my vehicle?!