How can you get better at your job? Get good at what you do; Don't make a scene; Make your boss look good (make his job easier); Make a decision.
Thank you. We're all refreshed and challenged by your unique point of view. | I wasn't rude, I was firm.
I'm sorry, but we cannot handle special requests. | When you pay too little, you sometimes lose everything, because the thing you bought was incapable of doing the thing it was bought to do.
I understand if you have to go prepare. | I'm scheduled to do some other work right now, but try "abc", if that doesn't work file a ticket on this issue and I can help you with it as soon as I'm free.
Don't say what, say why. | I don't think that was explained to you properly.