Sachs uprated clutch fitted problems after just 2000 miles

Before I start apologies for the long post, but I didn't want to miss any details.

Had a Sachs organic uprated clutch and new dual mass flywheel fitted 2000 miles ago by an independent Audi specialist. All was fine until about three weeks ago. Clutch was very smooth with only a slightly heavier peddle feel.

Then just over three weeks ago whilst at a junction as I was about to engage first gear the clutch peddle failed to rise when I lifted my foot. Car stalled and would not restart so I had to push it off the junction. The clutch peddle had only risen half way. I lifted it by putting my foot under it and was able to restart the car. Driving it after this there was lots of vibration through the clutch peddle every time I started to depress it to change gear.

Took the car to my local garage they suggested it could be the clutch master cylinder as they said the slave cylinder should have been replaced when the clutch was changed. So I had the master cylinder replaced and the system bleed. But within a few journeys the same problem happened again with the clutch peddle failing to rise.

I took the car back to the independent Audi specialist and left it with them over night. The peddle failed for them on a test drive so they rebleed the system and asked me to drive it some more to see if that had cured the problem. It hasn't and on the three journeys that I have done in it since I got it back the clutch peddle has failed to rise twice.

So my question is has anyone else experienced this and what is the likely cause? Clutch is very strong when in use with no slippage. But when engaging it there is lots of vibration through the peddle and then the failure of the peddle to rise particularly after some fast road use then stopped at a junction.
Any thoughts gratefully received as this is driving me mad. Many thanks Giles

Grants, thank you for you response, much appreciated. This is what my local garage have also said. It's bad that a solve cylinder should fail after just 2000 miles. I hope it hasn't damaged the rest of the clutch as the vibration coming through the peddle is not good. Thanks again Giled

Marshy
That's very helpful, I was assured by the independent Audi speculialist that the slave cylinder had been replaced. The total cost for the clutch change was £1600 so would be strange if they didn't. Thanks again for your advice much appreciated. Giles

Marshy,
Will do, and thanks again for the advice. Giles

Granta
After 4 years at law school, my concern was that they would claim it was something else and I would not be able to argue otherwise. I'm no mechanic and so far all they offered was a rebleed even though there was heavy vibration through the peddle.
If the respone is not good I do have 10 years of experience of taking consumer law cases to court, but I do not have the technical knowledge that could loose me the case. I might have to take into another Audi specialist then reclaim the costs through court.
Thank you again for the advice it is spot on. The only problem I have to get a difinative verdict is to take the clutch apart but all the signs point to the slave cylinder,
Thanks agin Giles

The Independent Audi specialist supplied all the parts for the clutch installation so I really need to take it back to them again.
Thanks again for your advice, you have both confirmed what my local garage and the RAC man said when it first went wrong, namely that it was either the master cylinder or the slave cylinder. With the master cylinder now ruled out it looks like it is the slave cylinder/ release bearing.

Marshy
That definitely points me in the direction of the slave cylinder. £25 from Euo car parts at the moment, just the small problem of getting the gearbox off!
Thanks again for your advice it really is appreciated. Giles

Your a star many thanks.Giles