Fox rental company has slow counter help

We didn’t get the car we ordered. They made us do the “bring the car back empty, we will fuel it” which is a rip off.

I did notice it until I was driving to my destination but the check engine light was on and remained on the whole time I had the vehicle. In addition the vehicle seemed to be out of gear even though it was an automatic that something could be wrong with the shifting or acceleration. I caused several minor scares throughout the time I had it.

The pick-up line was atrocious - even with 4-5 staff at the counter, it took 40 minutes to get to the front. I had a simple pick-up (only driver, online reservation, no extras) and it still took 10 minutes to be done at the counter - it was easily the most frustrating car rental experience I've ever had. The agents all seemed to be trying to upsell every customer on every possible item. The transaction technology was also really sluggish and antiquated - the kiosk I was on crashed halfway through.

Would have been nice to have a fob, but had to use a key to get in the Jeep the whole time. They said they don’t give fobs on Jeep Wranglers.

My car that I booked was not available. I was given a different car. It really was not what I expected, but what option do I have?