Originally Posted by
snaxmuppet
I will try a charge-back through my bank but as you say... it is their word against mine.
Your word could actually be pretty strong evidence, were it to end up in court (which hopefully it won't).
I'd definitely be pursuing it with Avis and your card issuer if I were you. I don't think BA Holidays are in the wrong in this instance.
Your biggest hurdle may be if the charge was properly set out in front of you at the time you signed for the car, but you didn't read it. But that's very commonly the case with car rental ruses and if the agent didn't mention at all to you that - despite you having a prepaid voucher - you would be charged a huge sum which you could never previously have been aware of let alone agreed, then I don't think that charge is defensible.