Exactly. The proper response, is to make note of the house and return at a later time. The meter ain't going anywheres. When I was a pizza delivery driver, we were not allowed to go anywhere else other then the front door, unless the delivery specified otherwise. We had a radio, and were supposed to check in every 10 minutes or so, for our own safety. Carrying a hundred dollars in cash in some rather rough neighbourhoods is not fun.