You should respond by saying: YOU came into MY shop. WTF
I empathize. I get rude ppl on the phone too. I work for a childrens charity and I literally get yelled at if someone doesnt recieve their 10$ Tim Card for registering early for an event. its $10. seriously. I WILL mail it to you – why be so rude about it.
outloudkat, since 2009 
You should respond by saying: YOU came into MY shop. WTF
I empathize. I get rude ppl on the phone too. I work for a childrens charity and I literally get yelled at if someone doesnt recieve their 10$ Tim Card for registering early for an event. its $10. seriously. I WILL mail it to you – why be so rude about it.