Won’t use europcar again

We arrived to find the car we had booked wasn’t available They offered us an “upgrade” to a compact car or the 8 seat people mover we ended up with When asked about the car we booked we were told it wasn’t available and the only cars available were the compact and a couple of people movers. We ended up taking the people mover as we had two small girls with us The booster seats that I had emailed to confirm that they would be installed had to still be installed before we could go to the car It was a stressful start to our holiday and some people in line wouldn’t have been getting a car at all