As a retail worker for 5 years, I've screwed over countless numbers of people just like you. All acidently.
I've been to Cabelas and Bass Pro many times and unless you come in at a good time - it's frickin nuts
It's very hard to remember who is next in line when the line is spread out left to right. You may have been next - and he may have once known you were next - but a few minutes later it could be unclear. And I know what it feels like to deal with cutomers 10 hours a day - it's dallusional (sp)- you have no idea what's going on. And that accounts for a smart remark too. People don't know they do it because they're working so hard (to you they may just be standing there doing nothing). So then they're thinking - I forget who's next - I have to pick one..."
I've seen this at Wallmart, Cabelas, Bass Pro, any busy bar on a wild night, etc.
I wouldn't expect anything to come from your letter. I've been phoned and yelled at many times by people. They would demand the manager be called and they'd complain about me. The manager was always "yes maam, I'll take care of it, I'm sorry." But as soon as they leave the manager and me would just start making hand job motions and saying "what a *****"
So I don't think it was done on purpose - but I wasn't there so...