Simple mistakes 12. Paying in penny rolls or bags of change. There's no way a driver has time to stand at the house and count it. A few times, we discover the amount was short after getting back to the store. Some drivers can refuse to accept coin rolls or large amounts of change. Technically, it must be counted before the driver can leave. Please don't be upset if it takes time. I can't believe some people pay this way. Last updated: August 7, 2008