The cashier of the company delayed the small reimbursement and threw a sour face. What should I do?

What is a cashier? Reasonable reimbursement is your right. You shouldn't look at his face. You gave in this time, and he will bully you even more next time. He thinks you are easy to bully. If the company has financial difficulties, let him gently explain it to you. Why not show it to you? People like him always treat him and complain to the financial director if they don't listen. Nowadays, there are really many such people in society, either with a big temper or feeling that they are great and cruel to their colleagues and guests.