We showed them on the voucher that we had booked and paid for a Compact vehicle (Nissan Vera or similar) and a Fiat Bambino was definitely smaller than the car class we had booked and paid for. They said they had nothing else for us except a larger class of car (a Chev Impala) and we would need to pay $88 to get the upgraded car if we wanted a car that morning.

So, we argued for a while then we paid the extra $88 (+ 19.875% sales tax) as we were given no choice if we wanted to get a car and having accommodation booked in Boston we needed to get on the road to be there by dark.

We were hood winked into an upgrade that we didn't need and it was not necessary or fair that they charged us extra because they did not have the car we had pre booked and pre paid. We had dropped into the office the day before to check our booking so there was no reason that they were not ready with the booked car class!

We tried to get a refund when we got home but they had not given us "class booked not available" document (apparently we were supposed to know this!) so had no paper work to support that the class we had booked was not available.