[S3_Ren]

hi everyone i'm new this site,
i've just bought a 52 plate audi s3, i've only had the s3 for 10 days and bought it from shrewbury audi with 51k on it, love the car to bits but the clutch slipped on it, so i called the dealership where i bought it from and they reckon they've done a pdi check on it before i bought it and are saying its down to my driving and comes under wear and tear?
has anyone ever had this problem?
cause i think this is very unfair as they want me to pay for the cost even though its still got 12 months warranty.