Fox Rent A Car review: Charged for tolls due to fox agent's incompetence

When I rented a Fox car for my Denver trip earlier this month through Southwest, I was not expecting to pay nearly twice the amount stated in my confirmation email...and then some to this day. For starters, Cynthia, the Fox kiosk agent, was pushy in her pitch for us to buy insurance when my wife and I declined twice that we were comfortable with our own travel insurance plan's coverage for rental cars. She wouldn't back down, so we gave in. Once insurance and the unlimited fuel costs were added, my rental ended up going from around $350 to about $625! I thought that would be the end of it...until the invoices after my trip started coming.

After twisting our arms about rental insurance, Cynthia explicitly asked if we wanted a toll transponder for our rental car. I verbally and emphatically said, “Yes” and told her it was necessary for our convenience and since Colorado toll roads are cashless, making it difficult to pay with cash. My wife was standing next to me during this interaction and witnessed this conversation. Cynthia failed to properly add the service to the contract, and my rental agreement did not reflect the toll transponder service I requested, further supporting that she failed to process it and/or follow up to ensure that our rental's toll transponder was installed or working.

On Saturday, June 20, I received the first of three invoices saying that I owe for unpaid tolls and administrative fees during my trip. The first invoice was for $112.15 and was due Friday, June 19, the day before I actually received the invoice. My USPS Daily Digest email from Saturday, June 20 shows the invoice being scanned and expected for delivery that day, which proves it was physically impossible for me to pay or dispute this before foxtollsandfines.com charged my card for that amount. Additionally, June 19 is a federal holiday, which likely further delayed the delivery of this invoice.
I submitted a complaint to foxtollsandfines.com on Tuesday, June 23 stating nearly everything in this message, but I received two more invoices with additional toll and administrative fees. The third and hopefully final invoice says my total amount due is $140.65: $50.65 for toll charges and $195 for administrative fees, but it looks like I received a $105 administrative fee discount. With foxtollsadfines.com automatically charging my credit card for the first invoice, my balance is now $28.50.

It feels like I'm being unfairly punished for the Fox agent's incompetence as well as the delayed delivery of that first invoice. A basic Google search of complaints for Fox shows that I'm not the only customer who has gone through this ordeal, which seems predatory and a means to extract additional money out of customers weeks after their rental car is returned.

Based on other customers' experiences, I lack confidence that this situation will reach a suitable resolution (i.e., getting refunded for the tolls and administrative fees that shouldn't have been charged in the first place). Other customers have noted that foxtollsandfines.com is a third-party administrator and did not have good luck airing their grievances, which deepens my pessimism.