Dingo,
I actually did mean my comment about the last laugh, not that you were being petty or any thing like that. That is the great thing about the internet it gives you many choices to source parts and equipment. Due to the rudeness of this bloke you have the choice to vote with your feet and go elsewhere to source your stuff for the intercooler which means he doesn't get your money.
I work for myself and had a customer yesterday ask whether I minded if she recommended me to other potential customers, as she thought I might be too busy. I said by all means, as the work you knock back, is the work you never get.(apparently that same expression works for sex too, but that's another story).
The great thing about this forum is that there are dozens of people on here who can pass on the name of suppliers who will provide excellent initial and follow up customer service for the stuff you need.
Good luck with the intercooler
Mark