It's always good to have that paper trail for if it indeed does end up as a real dispute. Not car rental but a similar experience with eBay where a scammer ship

It's always good to have that paper trail for if it indeed does end up as a real dispute. Not car rental but a similar experience with eBay where a scammer shipped an item to an address in my city but not mine, apparently a common technique. I had DHL's email confirming this, and if thinking I doctored it it isn't a difficult call to DHL to verify, but all claims to both ebay and Paypal were denied despite definite proof. More than half a year later I finally got the charge back presumably thanks to having the paper trail for the credit card company. Naturally I closed both accounts after this experience (the whole point of PayPal was to have protection in these cases...) but I suspect almost all companies are optimized for reducing support costs even if it means just a few lost customers.