Worst Car Rental Brand we have ever Experienced

We have Booked BMW X5 because of Large Boot space, at arrival the Counter person without informing us gave us a different brand vehicle. our luggage was unable to fit in the boot so we went back to the counter which is 600 meters walking distance from the pickup location. when informed them of luggage issue they are not even able to communicate in English and are so rude that it seems like we are hiring the vehicle without paying them. Neither they offered us an alternate vehicle nor they were willing to refund us the payment. counter lady was so rude that she didn't even let us talk to the manager. even after accepting the offered car the Tyre worn out and they charged us for it. we spended more than 3 hours at the counter to get the vehicle. even representative from rental car approached supplier to come up with a solution but still there was no positive gesture from rental counter. Sicily needs to change these kind of staff and hire some professional people who are atleast able to speak basic English and able to understand clients requirement.