Thrifty Car Rental Charged for a toll in Florida, was in Ca. My rental car had a nevada plate, car listed on complaint had a NY plate, impossible!!! Nationwide

 I rented a Toyota Yarus in Palm springs Ca.    It had a Nevada plate on it.   Picked up the car at around 9:30 am. at 3/08/15.   I returned the car on 3/15/15 also in Palm Springs, we never left the Palm Springs area.   Now I have received a notice that I owe for a toll from Boca Raton, Florida.   Plate on said car is from NY FZF3960.   There is obviously a mistake here. 

On the notice I receieved there is no way I can even complain to a real person to at Thrifty Car Rental.   The toll amount is $1.40 total with $30.00 Administration fee.   What a ripoff this turned out to be, if I do not remitt payment for this amount they will charge my credit card $31.40.   This give me no alternative  or real person to talk to, to right his wrong.  What do I do?  

I feel helpless to stop this utter reguard for my rights.