Hi,
Sent you a PM.
What exactly is your problem? Pedal goes down, clutch doesn't release? Sticky plate? Easy to fix.
Pedal goes down, but feels soft, clutch doesn't release enough? Various reasons, need to know more.
Grab pedal, pull back. Did it move? Does pedal feel better NEXT time you use it? Stiff pedal .... fitting return spring may fix it. Might mean strip out pedal box, and free everything off. (Do S3 have a pedal box? I've never looked)
Pedal is solid, won't move. Could be slave piston stuck at bottom of travel, in which case you will (should) have no drive. But more likely to be the push-rod has punched its way thru the release lever inside clutch ...... gearbox out job. Ask me about my gearbox lifting tool. Worst bit could be removing the floor and seatbox ....... rusty nuts and bolts.
HTH
602