Pathetic Service and unreliable vehicle

I left this review on Google below aswell:

The manager and regional Manger very blunt and not helpful at all. We recieved the car, and none of the checks were done.. Waited a week for them to pick the car up in order to do these checks with no indication of when I will receive the vehicle again. The car was received dirty and in a pathetic condition. When we explained that we are not happy with the vehicle (clutch issues, Weird notices, etc) and want a exchange, we were told this isn't possible and it is our every right to request an exchange. Who wants to buy a car with issues? Any advice as to what I can do to ensure this exhange is made for us?? After these issues;

I have the car since June, the license is expired and all I hear from them it's being sorted. Then they need a updated ID copy, then proof of address. Now I'm informed that the car hasn't even been through roadworthy.

How do you give a client a car that has not been roadworthy, I mean this is a huge risk.