National debt advisors has no integrity!!!

After joining NDA in 2016, we then within 3 months decided to cancel and rather pay off out own debt. And so we have. This year August should have been the last month to pay our final installment on the vehicle that was listed on NDA. YESTERDAY I phoned MFC and according to them we will only be finished 2021-8-31 due to NDA. In normal surcimstanced end of august 2019 would be the last installment. Sins we decided to pay our own debt off we have been paying MFC R6500pm for the vehicle and they have debited, so now because of NDA a car we bough in 2014 which costed R406090.80 will cost us well over R500 00.00 which means we will pay R156000 00 more for the car than we should. And who will be pocketing this money, NDA OR MFC? Countless times i have contacted NDA to speak to Shepherd the cancellation teamleader but either he will return my call, or he is busy or he left work early. NDA PLAYS with peoples financial lifes and this has become rather exhausting. NDA needs to fix their problems and step up, how many times will i have to beg to cancel my account with them and remove the flag from my name????? They have no idea how to work with people and cannot be truthfull. I want answers and as long as i am not happy with the answers you give me i will continue to complain. I want the flag removed from my name and the arrangements you made with MFC sorted out becauce i will not pay more than half a million rand for a 2010 model car plus the original contract with MFC is not even half a million rand. I want this issue sorted out.