You asked for something they could not provide, the assistant told you could not have it and then proceeded to tell you what your options were, I can see no problem there, barely even worth posting at all.

I spent many years in retail, and frankly the intelligence,arrogance and general lack of courtesy of a very high proportion of customers, leaves a great deal of room for improvement. It's the main reason that I got out, as it convinced me, that by and large, the general public are poorly informed idiots at best, congenital morons at worst.

Mind you that's just my opinion, but I'm right:)