check and see if the turned or replaced the flywheel,i got one a while back that had a clutch put in it at dealer and they didn't bother to resurface the flywheel and the clutch only lasted a few months,its possible they thought it didn't need done and the mechanic choose not to have this done which would result in shorter clutch life,not all mechanics where it be a dealer or a small shop do what is always needed to be done,good luck.