i would give him one more chance to rectify the situation.
failing his willingness, i would suggest to him that you are going to take the vehicle to the agents to rectify and then present him the bill.
you also have the option of contacting the consumer protection council and report this case to the ombudsman.
one would not want to get nasty but to rectify something seemingly as simple as that would be worth the gamble of preventing having your name dragged through the mud. there are many ears on the forum and members quickly identify and seperate the good from the bad.
word spreads quickly and a business can close down overnight if it is deemed to be incompetent or a fly by night.
i have checked the rave manual and no mention is made of any lubricant to be applied to the spigot shaft. during my training as motor mechanic, i also never came across any instruction to apply lubricant. certainly if any lubricant is to be applied, i would recommend a dry type like graphite powder. this is not affected by heat, won't dry out like grease and will supply the additional reduction in friction as required.
my gut feel tells me that an aftermerker clutch plate was fitted which may not meet the high standard set by the Land Rover components.
I certainly know of very few Td5 clutches that have packed up with less than 250 000km on the clutch unless it was severely abused.
Problematic is the flywheel on the Td5. the "shock absorber" does sometimes fail prior to that milage. the flywheel is fitted with a spring mechanism which sometimes fail.