Horrific customer service in general

Avis is absolutely ********** in any form off customer service. Booked a Cat A vehicle and on pickup was told it's a Cat B vehicle, either take it or leave it. So we took it and gone on our merry ways. The radio on the vehicle didn't work and the vehicle looked as if it was just collected from a backyard panel beater with all the poor paintwork on it. After numerous calls to try and get hold of them they swopped it out. They were going to process the refund after the return. It has still not been done, and guess what, they are still terrible at answering a phone. Neither the customer care or even emergency number gets answered after numerous attempts. If there were any form of giving them a minus rating that is what they would have gotten.