check to see if you have a 2ft plastic pipe leading to the clutch slave cylinder or the thick rubber hose, leading to an S bend metal brakes pipe style clutch pipe, if you do have the plastic pipe and it will not undo (which it will not

) source the part first there are posts on this 'ere forum. mentioning brickwerks or indeed VW "commercial" directly it will be under £20 to replace. then you will have to cut through the pastic pipe, and feed a good ring spanner over the pipe to the join at the chassis, firmly hold the metal pipe and carefully undo the rest of the cut through plastic pipe. "carefully" otherwise you will need to replace more and more of the clutch pipe as you damage the joining bits.
most probably after all that post I will notice that you have an 1980's Aircooled....
Dylan = C Reg 1986 T25 1900 Water Cooled..