Ah thank you sir
The trouble is, it's very easy to knacker a clutch within 10K by riding it or slipping it everywhere. Is it possible that your driving style contributes to this? No shame if it does, it might not even be something you notice. Realistically, it could well cost you the value of a new clutch + install to find out if the clutch is faulty, which I have to say is fairly unlikely. It's more likely that either you're slipping the clutch regularly OR the install wasn't done correctly. Unless you take it back to another garage you'll never know if it's the latter or not.
Could there be a claim for early failure? Yes, possibly, but practically that's going to be expensive and impossible to prove. I'd suck it up, then take it somewhere else to fit to try and eliminate poor fitting as the cause.
HOWEVER, before all that then definitely check the slave cylinder as Keyser says, that could very likely be the cause of your woes.