If you are planning on flying to costa blanca anytime in the near future, stay well clear of dickmans car hire. They rent cars out of Murcia and Alicante. They take a deposit from your account when you pick up the car and it is unlikely you will see this again.
They are usually the cheapest option via holidayautos.com, be warned!
More important to check the car for dents and scratches, mine was a mess but had nothing marked at the documentation... Plus Spain hire cars company's rip you off for a full tank of petrol at exorbitant prices
I was charged 90 euro for a tank of fuel for a 1.2 corsa.... Disgusting
I had this trick when hiring a van in the UK; I would suggest not using "A1 National Van Hire."
I called several times requesting the deposit back (£250). Their excuses ranged from, "you don't get the deposit back until after 10 working days" to, "we've lost your bank details" or, "it will be in your account in 3 working days."
I had booked on a visa debit card and the building society were really helpful in getting the money back. The building society refunded me after a short investigation. I had to show the building society:
a. Evidence that the deposit was refundable on return of the vehicle(did that using the company's website).
b. Correspondence showing my attempts to get the deposit back (I had sent e-mails but also included details of phone conversations that were listed in the e-mails).
c. My booking reference with the company.
I would have thought that the protection on a credit card would ensure you a refund from the card company and they will have to claim the deposit from the hire company. I was fortunate that my building society was very useful as I had only used a debit card.