Disappointed, disappointed, disappointed

I am extremely disappointed with FlexClub. Had my subscription with them for a few months and in the month of Dec, received notification that there would be changes to the subscription and that the vehicle with their partner (Europcar) would need to be returned. I was given an option to proceed with FlexClub with a different provider subject to affordability. I followed up after not receiving feedback on my selected choice, and was told to upload proof of my bank statement. Because I I do not currently bank with one of their supported bank I was simply told that I cannot be assisted. Just like that... when I have only a few days to go before returning the car. What am I supposed to do now! I have no other alternative in such a short space of time and I find it strange that my bank statement is not acceptable now, when it was accepted when I app**** for a subscription a few months ago.