The supplier said we booked with cheap price the service should be like this

Car was very dirty on exterior. Employees did not have time to clean it up since demand is too high. Not their fault.

The car was unavailable when I reached there. Staff is more abusive then a nazi concentration camp

Nothing particularly wrong, certainly value wise. Staff friendly enough, car fine, service good. A couple of things to tighten up on though (some my misunderstandings but you could help others avoid)... Finding the location - I'd wrongly gone to the car hire bus stop at terminal 5 before realising you weren't on there. When I looked on the internet at the booking it said at the top 'available from terminals 1 -4'. As I saw that I didn't look further assuming I needed to go to a different terminal. I did so on the free train then found you weren't on that sign either. Only then did I look at the smaller print and find I needed to go to a specific bus stop for a specific bus. By that time it was very late. I had tried calling for advice several times but no one picked up which would also have saved me time. In hindsight I completely realise that it says on the detailed part of the voucher how to get to you but having travelled mainly abroad I'm used to car hire that's signed or in the airport. It never crossed my mind not to just follow signs for car hire and look for your desk.

Got there, hired the smallest car available. All they had was 9 seater vans. Not suitable for our needs

I am absolutely disgusted with the service from Easirent, who conned me into signing for insurance that was not explained to me. I had already purchased insurance from Easyrent and instead of asking for a deposit they took more money out of my account for further insurance without explaining the terms to me. After realising the next day that money had left my account, I called them and they just blamed Easyrent and said that they should never have sold me insurance?!