<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by AZ Travels the World:
The problem with disputing the charges is that they no doubt have a written contract in-hand that shows that I initialed the boxes that indicated I wanted the insurance and the fuel purchase option. In my experience on two occasions getting a credit card company involved in a dispute, they go for the documentation first and I'm afraid in this case they'll just eventually come back to me and say, "Here's the agreement. You signed and accepted these charges. Your claim is denied."
That's why I think my best approach is with Avis. They are the people, after all, who should be able to look at the situation, factor in the similar problems they've had with other customers in Italy, look at my record and status and say, "Why would this guy be making this up. He may have signed the contract, but it was in a different language and is, in fact, completely inconsistent with his 15-year plus rental history as a President's Club member with our company. We have no reason not to believe him."
That's why I like the idea of writing to someone in the Executive Suite at Avis and laying out the story. Any logical thinking, reasonably bright person should be able to listen to what happened, confirm the facts and make a sound, customer-oriented decision.
How hard can this be?? 
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Avis take thier customer rental history offline to be stored after 6 months! & then the information can only be retrieved with the Rental document number, and that takes 7 days, so i guess the people you are speaking to dont want to tell you that they cannot see your renting habits of the last 15 years, they can only see 6 months...