Enterprise Rent-A-Car review: car unavaiable despite reservation/car booked not the car we got

This morning we were supposed to leave early (8 am) for a planned trip to Memphis, TN. My husband had reserved a convertible from this company to pick up at 7:30am at this MG location. I must note that my husband reserved the car 5 days in advance and even went into the place 2 days before we were leaving to confirm the rental. Bright and early we awake and go to pick up our rental car.
On arriving at the store, we are told by Jon Bak (branch rental manager), that they had no convertibles, and, for that matter, had no CARS at all. Jon told us that the worker who had taken our reservation. Austin Matthews, would have to be "talked to", completely thwarting the blame, and blaming our problem on Austin.
Valeriys Skvirskaya, the employee at the desk said she would inform us when the first car arrived for us. She asked if this was ok. I said it wasn't. But what could we do? It's the day of our trip. Upon calling a couple other rental facilities, they were all booked. We could not immediately get anything. No big surprise as most places don't rent on the "day of". That's what a RESERVATION is supposedly for.
So, we wait...and wait. Finally my husband calls THEM at 9:00 am. And suddenly they have one single car, a VW Jetta. Which means they had this car and didn't bother to call and inform us! Would this car have been gone as well, if we hadn't called them to check?
And who is driving our Mustsng?
This is classic bait and switch/double booking.
Plus, putting us off 2 hours on our vacation is unexcuseable!
They gave us half a tank of gas as a reward. Not enough IMHO. They said "Thanks for working with us." (Like we had any choice).
As a business it seems that you need to rent the cars, and will, at my expense/time. Just like doctors, you are obviously overbooking with to make sure you DO get your money. Then give flimsy excuses to those who they just can't accomodate.
The disorganization, lack of caring, and the manager putting the blame on an enplotee who was not around to defend himself is disgusting.
I have no respect for Enterprise. You left us in the lurch with no options, and 2 hours less vacation time. We need to be treated like CUSTOMERS, not dirt.