Work issues

I hate it when you have a customer that you say hi to and ask if they want a bag and such, and they don't say a damn thing. And then when I accidentally overcharge them $1 they get all shitty because I messed up, even though I'm still training.

But in all honesty I don't like those sort of people people they just try to make my day shit and stuff, but in the end I'm getting paid so meh