Disappointing service from customer desk upon arrival at Gatwick.

I was disappointed that the service desk tried to fob me off with a 2 door Fiat 500 even though I had booked and paid for a 4 door Ford Fiesta or similar. So frustrating that almost every time the rental company tries to persuade you to take a car that is a lower specification than the one you have booked in advance and paid for in advance!! Trying to charge £14 per day for a satnav and £10 per day for an additional driver is just ridiculous. If the prices were more reasonable I’m sure your customer would be tempted to boost your profits via these “add ins” but because you are greedy and overcharge for them I’m sure that most people like me don’t bother..