Terrible- Never again

I booked an AUTOMATIC medium SUV . Upon arriving at Brussel we realized that medium SUV is actually aford focus... Than the agent convinced us to upgrade the car (for extra money of course). We got an infinity Q50 - which initially seems to be a nice car however it was old (over 40,000 km) and not well maintained. It was dirty and did not function well. We were stuck few times because the key ID was not identified - "incorrect ID". Then the engine just died and the car had to be towed. We had to fight for a replacement - no body at Budjet-Avis cared that we are a family with 2 kids, lots of luggage - stuck with no car. They offered us the smallest class, manual, as replacement (I didnot drive manual for 30 years!). After fights and a loss of a day vacation we got a manual car - lower class!!! No compensation!! we paid for an automatic higher class car, we lost a whole day. We expect a compensation before taking other measures.