They forced us to upgrade the vehicle and overcharged us! How is an Audi A4 an upgrade from a Mercedes B? Ridiculous!

Pretty good. If you need to pick up the car, it's best to take the T1-T2 shuttle bus instead of walking back and forth. The pickup process is very quick, just a couple of sentences and you're good to go.

There was no queue because I arrived early in the morning.

The rental service agent's attitude changed when they realized I booked through QEEQ.

Very unsatisfied. It's been four months since my car rental, and they still haven't addressed the issue of overcharging. The car didn't have a navigation system, but they still charged me for it. They also claimed there was a scratch on the front bumper when I returned the car and said they needed to assess the damage and charge me. Four months have passed, and there's still no conclusion. The overcharged fee has not been resolved either.