Consumer advice needed…

[Jonathan27]

I’m looking for some advice and views. About two weeks ago my car broke down, I had it towed to the garage and they explained that the Driveshaft needed replacing.
All well and good, so I paid the £600 and they did the work. Now just over a week after the repairs the car gave up again. When the AA chap came out he said that the driveshaft had come out, and the in his opinion it wasn’t fitted correctly.
So, my question is; what should the garage do about this? Should I have to pay for this to be repaired or is it their responsibility?

Thanks for the help.