Anonymous: One time I had a couple of customers with their kids. The lady asked me if they could pay part of transaction in cash and the rest by debit. I tell her yes, she gives me a $20. After the transaction, she starts yelling at me because I didn't give her change. I tell her that's because she gave me a $20 and the rest was paid by debit. At this point her spouse starts yelling at me too because, apparently, I was supposed to read her mind and magically know she only wanted to pay $5 with that $20.