Shocking Service- Pace Car Doesnt Care

I booked a car which I had fully paid for a week before arrival. When I got to the airport, the greeter was late and it took more than 2 hours to finally get the car. On arrival, their credit card machine/payment system was not working, so they kept running my card which ended up with me being double billed for the same rental. The deposit they took was several thousand more than what was quoted in the voucher.

It took more than 10 calls over several days to get their finance/admin to finally admit there was a double bill issue and they promised to refund me between 7 - 10 days after I returned the car. Per the agreement, I returned the car several hours early on the last day in perfect condition and I took pictures to document that. It is now 15 days after I returned the car and my deposit has not been returned. I have also not been refunded the double amount either which they promised. They don't pick up the phone, messages left are unreturned and they just do not to care about their customers. I don't usually do these reviews and don't like complaining but the service I have received with this company has been shocking. In 20 years+ of international travel and working with rental car companies all over the world, Pace Car Rental rental has been my worst experience. This booking was done online through discovercars.com