Garage Problems

[sophie_1003]

I took my car to the garage for an MOT last Wednesday (the garage take it to the MOT centre then carry out necessary repairs) and they are still replacing stuff because of problems with the emissions. The last time I took it to them they also had it for a long time and it ended up costing me a lot of money; however, the work they did on it was a big and expensive job so I thought it was justifiable. I have used them before with my old car and never had any problems but am wondering what I should do now this is the secnd time they've had my new car for what seems to be a long time for the problem.
Do I just let them finish then never use them again or pay them for the work done so far and take it somewhere else?

[sophie_1003]

Ta Al, no idea what the first part of that answer meant though! Just glad to have it back now anyway!