Angry and Disappointed

So, I am under debt review and have been for the last 4 years, I have just on 18 months or so left. I have never once missed a payment since going under review. Along comes COVID and with that all the joys of salary losses, etc. My debt review company sent through all the relevant forms to all my creditors INCLUDING BMW. As I was copied in on the e mails to everyone, I assumed that everything was okay. I app**** for 3 months Covid relief and at the end of last month, all my payments went back to normal (no problems there). All of the sudden, I get an e mail from BMW stating that I need to settle my account and make an additional payment for an amount that varied and changed from just over 32k down to just over 2k. ZERO explanation was given as to what this amount is for, ZERO response on the numerous e mails back and forth between myself, BMW and my debt review guys. This was 3 weeks ago and we are still waiting for responses?? I now understand why BMW has such a low rating and such a low trust index. The entire situation I currently find myself in, is absolutely disgusting to say the least, especially considering the current pandemic, subsequent loss of earnings and the fact that i was extremely lucky to only have 3 months of salary cuts. There are some people who have not earned a salary since the start of lockdown. They expect me to refinance the car, which I cannot do as I am under review? So what are my choices here?? Wait for them to repossess the car in which case I will almost certainly lose my job and in turn my house, etc as I am the single breadwinner in my household. I am extremely angry, bitter, disappointed and at a complete loss.