CarTrawler review: If you fail to present a valid credit card, you get not refunded!

I booked a car (IT731319700) for a two weeks period in August in Italy for a total cost of 710 eur.

The general terms and conditions mention that failing to present (among others) a valid credit card will result in the company car to not release you the car... And I presented a Revolut Visa card which appears to be a debit card, although it had more than the deposit amount needed (1800 eur vs. 1200 eur needed).

No other reasonable solution could be found: do a money transfer for blocking the amount, or using another credit card (because the name was not matching my driving license). The only solution proposed was to pay upfront an extra insurance of +- 600 eur for the 2 weeks (which after some discussion was reduced to 500 eur...), which I refused to pay.

It is completely dishonest and exaggerated to keep this strict Terms & Conditions policy, and I do not understand how this is even permitted: paying 100% for a service that in the end is not used at all is a pure scandal.

A more customer-friendly company would, in the case a customer fails to present one of the requested document, suggest a refund minus some administrative fee for covering the little extra time it takes to do the refund. But keeping the full amount for an unused service is outrageous.