Toyota Used Cars do not buy a used car from beechmont toyota Cincinnati Ohio

Toyota used car sold me a 2008 Hyunday sonata with 3 years left warranty and with a car fax that show the car has no problem or have not been involved in any accident. I week later, upon taking the car to a Hyundai dealer for a routine transmission fluid change, the mechanic has told me that this car was involved in a accident and it was repaired. I took the car back to
Toyota used car salesmen/sales manager. they all denied knowledge of this and claim thta the previous owner, who is a major car rental company did this and not them. I asked how they bought it and without knowing, especially they are in business of buying/selling used cars?. I do think they send somebody to columbus ohio to buy cars on their behalf with no knowledge or experience in doing so. Again, they claim the buyer did not know as well.
They refused to remedy the problem or to take bakc their car after only 1 week of owing it and with about 50 miles driven only.

Cheated
cincinnati, Ohio
U.S.A.