Your (his) contract was with the shop, the shop sub-contacted someone
to fit the carpet, this is nothing to do with you. the shop is the one
that needs to redress the situation.

That's what I thought.

[snip]
If they still don't want to know, just give you local trading
standards a call - they offer free advise (well, you are paying for
them in your council tax, so you may as well use them!

Yes, will def need to calm down before tom

Thanks for your adivce

Mike