Sales agent lied and up sold me into a larger SUV ...

Sales agent lied and up sold me into a larger SUV than I wanted and then gave me a regular sized 4WD, without reducing my rental cost. Fortunately the woman at the boom gate spotted this and corrected his error. However the full rental amount had already been charged to my credit card, and I wasted a lot of time on the phone to Dollar customer service without getting a credit card release to be charged the correct amount. I recommend strongly against Dollar. Their customer service department is very lacking.