Words just don't mean what they used to.

I noticed today that I say the word sorry way to much. If anything goes wrong or they stutter I tend to throw in a "Im sorry". I don't know why I do this because I am not sorry. I mean I am but there needs to be a better word for it. I try to get every job I do perfect but the truth is some people change their minds too much or have no clue what they even want. They like the shirt but now that they see it they would have changed this or that. Im sorry. I ordered a small but what I really need now is a medium. Im sorry. Can you print me up 1 more shirt we had a late person turn in there form. Im sorry.

I just feel that the word sorry means more then what I am using it for. They think I am upset and in a way I am. Its like the word thank you. If someone saves your life a simple thank you doesn't seem enough so you would go out and give them a give to show how thankful you are. What about being sorry? Do you get someone a gift for that? That would seem a bit inappropriate.

I am just tired of telling people things and them not listening and then apologizing for their mistakes. Should I yell at them? I need a word that says "I am sorry but you should have listen to what I say".