Terrible car, terrible service

Carhireabroad partner with Travelrent in Faro, who were quite simply awful:
- we were made to wait in a queue for 2.5 hours in the midday sun (temperatures above 30 degrees) with no shade, or water provided . This is ridiculous given the boast of 'no need top wait', and, if nothing else, dangerous.
- When I eventually got to the front of the queue, I was told that " it had been like this (i.e the queues) all day " , and therefore was due to them being under prepared as opposed to the scheduling of flights. We were then told that they had no cars, and made to wait another 15 minutes until one turned up.
- The car we were given was an absolute wreck, with bumps/scratches all over. I was told that I had ten minutes to leave the car park - silly when I had to locate the car on my own, pack all the luggage and try to find the exit to the car park.
- I was given no opportunity to walk around the car with the representative of Travelrent and discuss any issues. I returned to express my concern and was told that they were not interested in bumps and scratches and to simply mark these on the counter copy of the vehicle inventory of the rental agreement (at no stage was I asked to sign this despite the fact that it forms part of the rental agreement).
- I wrote to complain and they have completely ignored me!