I am rather confused here and there is no loan that I know of that doesn't automatically take the payments from your bank account ?? Even pay day loan company require you to have a bank account so they can do this.
LONG gone are the days when you physically handed over the payment in cash to someone ! If you didn't pay cash, how did you pay ? Nothing is clear from your post
So how did you pay? On the bank's web site, by check, by cash at the bank? You should see the payment within about 2 business days (weekday days). If not, call the bank immediately. Nothing anybody here can do.
Did you get a receipt? It proves you paid, if not, contact the dealership about it, and get a receipt from now on, for anything you pay for.
Am Brown from Ohio USA and i want to say a very big thanks to Helen Kent for helping me get a loan and i will be forever grateful to her and i will like you all who is looking for loan to contact her via email: email@example.com