Totally agreed!

(Last summer rented a car from Europcar, needed to extend it at the end of 6 weeks, and was told over the phone, that be no problem - and in fact there be no charge for it. 6 months later I only just now got my block on my account removed, and a measly upgrade voucher for all the trouble and headaches that resulted from me refusing to pay some random request for payment from them, which was eventually explained to be for the extra days. In between I had another booking with them which was blocked from taking, leaving me stuck without a car! Get it in writing (and if impossible, record your phone calls, as I did). And avoid Europcar like the plague - total clowns and thoroughly un-professional.)

You been warned