1. Retail: The most annoying kind are customers are those who demand refunds at the slightest pretext.
My own thoughts: What an asshole! Expecting a cheap 'made in China' import to be rugged? Try finding something that is built to last. Chances are, you would not be able to afford it. Want quality, but not willing to pay for it = Asshole.
2. Accounting: Things become hectic during the tax season. Unfortunately, there are clients who do not send us their financial documents (e.g. bank statements, check register or cancelled checks, credit card statements) until almost at the last moment. Horribly maintained check registers or check stubs are just as annoying. Finally, but not the least, some clients who are employers have sloppy attitude towards payroll-related record-keeping. This can bite their ass, if tax agencies decide to conduct payroll audits.
My own thoughts: Why are you holding onto these documents for so long? It is not like you are going to do much with them beyond looking at statement balances and the list of completed transactions. You could have sent them to us either once every other month or once ever quarter. Had they been sent to us earlier, we could have entered bookkeeping entries then have some time left over to double check missing info.
Some guy got really mad at me because I wouldn't accept his change after I opened the cash register. I was working all day and was disorientated so I got confused and everything was shit so I couldn't figure out how money worked