Fox Rent A Car review: Literal scammers

Fox fraudulently attempted to charge me for an insurance policy that I refused to buy by charging it to my credit card through the security deposit, they only had my credit card for a security deposit since I bought the car through Hotels.com. They failed in every way: to be polite, on time, have the car I reserved, have a car in good repair, and not commit credit card fraud. The fraud was rejected by my credit card as a fraudulent transaction since they refused (at first) to provide any documentation & when they did it was clearly cut & pasted together. You also helped me in a previous complaint no. [protected] where they admitted that I did not purchase this insurance, which frankly I don't even believe ever existed for them to sell me, & agreed not only on a refund of the fraudulent charge but a partial refund for their failure to provide what I did actually purchase. Now months later, they're threatening me w/ collections & marks on my credit for money THEY agreed was fraud & to refund me. They have no right to attempt to penalize me in any way for their fraud.