No Offset on Nu-Air tires

I just took delivery on a set of McLaren Nu-Air Dirt tires. I told the salesman (Mr. Scott) that I needed at least a 2 inch offset on the wheel hubbs.
Well there is no offset!
These guys will tell you anything to make a sale.
When I complained, he e-mailed me a price of $375.00 plus $75.00 shipping for spacers.
He comes back and says : I don't remember you asking for an offset.

Stand up to them, return them on his dime, get what you paid for.