Commissions

Ok I have a base salary that I get, but I also get commissions whenever I sell a Protection Plan(like a warranty only better) or a Tech Service at work. However lately, say within the last 5 months I keep getting screwed. I'll give a customer my card, and they'll come back when I'm not there and someone else'll get my commission. Like one time I was selling a Notebook to a guy and his father. Had em convinced on the plan and service. Gave em my card, they ended up coming back after I left and handing my card to the associate in Tech. Only thing is she only saw my first name, which is Bryan. Problem with that is we have myself and two other Brians at Office Depot. So she thought it was the Assistant Manager Brian, so she calls him over and her gets my $199 plan and $99 tech service. When I told him about it, he said he'd change it and give me credit. He never did though. The other day I was telling a customer what days I was gonna be there. When I mentioned not to come Wednesday because I wouldn't be there, he looked at me like I was nuts. I told him later that the only time I can make sure I get my commissions is when I'm there. I mean am I wrong for that?

-B