What is it with some members here?

Re the wanted ad I placed, I had a reply from a guy, no name mentioned ...yet! But he replied saying he could offer me the cable with a 10% discount through his company, to which I Very Politely replied...
"Hi P***, Very Kind of you, but I believe I can blag at least that from where I bought my other Van Damme stuff from, regards, Craig.

I then find a not overly nice reply from him : "Oh well, pardon me for trying to be helpful!

This is probably why I don't bother with AOS anymore."

"I was offering custom built with a choice of terminations, but you go ahead and 'blag'

Erm, excuse me for asking...but was I at anytime impolite or something, to get a reply like that?

Yours sincerely, gobsmacked of Nottingham