Who's right summit racing or me?

[rsmarr1982]

I live less than 2 miles from the ohio summit racing I usually go there for all my parts . I look them up online and take the part number right to the cashier and avoid the long sales lines. I recently purchased a water pump for my 72 k20 the truck I have is set up for a short pump. The one I decided to buy from summit ended up having the wrong bolt pattern for the pulley which I found out after in stalling it. Upon returning it they said we are going to charge you a 50% restock fee because you should have seen the sales department. So after returning it is going see the sales people and he tells me that a 72 chevy truck should take a long style pump and was very persistent in telling me a short one was wrong. Didn't all 67-72 with a small block have short ones?