Poor service from sales men

Poor service from them I have bought a car from this garage brought the car home and inspected the car properly the day after taking delivery of the car I went back to raceview motors 2 of the sales men were attending me I have told both of them about the cars right hand tail light which was getting water in, I was them promised a new light I have phoned every second day to hear what was going on and eventually my car had to go for the roadworthy again they said they do have the light and that they would fit it this passed Monday but their promises were never kept and the light was never changed it was just cleaned out