Dont follow

FOr four rental contract in a row since Dec 2014, Avis want to do as they please with one's credit card and dont follow procedures. On all my four rentals with Avis, the pre-authorization, they hold funds as per procedure. at the conclusion of the contract, they make an unauthrised deduction from my account without reversing the funds hold. They are quick to take what is owed to them, but to release the hold takes forever. My bank cannot release the funds until they receive the go ahead from Avis' bank. All I get from Avis is that the funds will be released in three working days. three days later, anotherthree working days. <br> <br> I olny have this problem when I rent from Avis, non of the other rental suppliers have this poor practice!