Complaint Review: Thrifty Rental Car International

Be aware - Thrifty/Dollar Car International Rental in Frankfurt, Germany will rip you off. It did me and many other renters.
I had a Thrifty on-line reservation for a mid-size car for 3 weeks in May 2014. Upon checking in at their Frankfurt, Germany, Airport Counter, I was told that I couldn’t use the Loss Damage Waiver (LDW) even though I presented my US issued Gold Master Card with it my paper copy of Credit Card Benefits guide. The clerk did not accept it as valid and if I wanted the rental I had no option but to accept their insurance with one of three choices of deductible. This put me into a real bind. I was already late by going from overseas arrival in Terminal 1 to their counter in terminal 2, which took well over one hour. I made a big mistake and accepted the rental with insurance, thinking I could get a later correction adjustment by Thrifty.
Needless to say, upon returning the car and upon writing to Thrifty, I got no help. This last rental (and there will be no more with Thrifty) cost me $561 more - almost double the online quote of $606. I was charged $1161 (853 Euros) for the rental, plus 826 (600 Euros) for the deductible, for the latter I was reimbursed $821 at time rental return.
Please be warned, don’t rent from this Thrifty location. It’s false advertising because their Best Rate is a trap.