I am curious if this is some scam on Dollar s part to pad the bill and if other people have had simi

Some weeks back we used them for a rental on a quick trip down to Florida. Anyone who knows us is aware that trips to the Mouse house are not an uncommon thing; we re seasoned travelers in them parts and go prepared for the myriad of tolls we will face on our chosen path: in fact we have a ziploc bag with quarters, nickels and dimes just for those occasions.
This past trip was no exception and every time we approached a toll Sue fished through the bag for the correct change. Now it is important to note that on this trip we went a little different route and that we handed the cash to a human at each toll; there was no dropping the change in the basket like we often did on the other route so, if by chance we had neglected to give them the correct amount they would have caught it then and there.
I went online to the Dollar site and filed a protest of the charge but have not heard back from them. Today I went online to the American Express card site to check recent charges downtown los angeles executive suites and sure enough Dollar had charged our card.  I just got off the phone with American Express s customer service and they credited the sum without a fuss so we re fine there.
I am curious if this is some scam on Dollar downtown los angeles executive suites s part to pad the bill and if other people have had similar downtown los angeles executive suites happen to them. I also now wonder if we try and book a car with them in the future (not likely) if they will try and pull something; like take the online reservation then, when we reach wherever we traveled to, decline to honor it and/or offer to rent a car, at a higher rate of course, downtown los angeles executive suites out of the kindness of their heart so we are not left without downtown los angeles executive suites a car .
Wow I just got a charge on my bank acct from Dollar Rental for $15.77. I am extremely angry. I know we did not pass up any tolls. We didn t go hardly anywhere to have passed any up. I would never have gone to that company if I knew they did shady stuff like that. that is ridiculous!!
As I said above we paid using the American Express card which we do because they also offer reasonably priced rental insurance; you pay a small fee when you rent the vehicle which covers the entire duration of the rental but is less than or equivalent downtown los angeles executive suites to what one day of insurance would cost via the rental agency itself. American Express refunded the disputed amount and I have not heard a peep from Dollar.