Using Expedia for a car rental in Spain.

Using Expedia for a car rental in Spain.
At the counter, the renter requires the subscription of additional insurance on the grounds that my VISA PREMIER credit card is debit (and not on credit) and does not allow to take a "deposit" (which is a pure scam) .
Expedia does not clearly mention this point (it is drowned at the end of the terms of use, after several clicks on links) and refused any assistance / refund.
Contacted, Expedia responds "All the rental companies today require that a credit card be used for rental".
So, if like the majority of French you have a debit card (it's written on the credit card), you should not buy through Expedia.
I have rented cars dozens of times via other sites, which make sure that their customers' CBs allow an effective rental without surcharges.
The lack of seriousness of EXPEDIA cost me 180 and doubled the rental price.
You are warned!