I also had the joy of arguing with callers who had a case of mistaken identity when Roomie and I first moved to Texas and got an apartment. Roomie has an incredibly common last name (along the lines of Smith or Jones), and by some coincidence, the last people to have our phone number had the same last name--and skipped town, leaving a large number of unpaid bills behind them. We were constantly fielding calls from bill collectors who would say "Is this the Smith residence?" and, when we said yes, ask to speak to Eunice or George. When we told them "There's nobody by that name here," they would reply, "But you SAID this was the Smith residence!" and basically act as though we were the world's biggest liars and were hiding Eunice, George and a huge pile of money with which to pay their bills under our beds. I always wanted to shout "Yes, congratulations, this is a military town with over 100,000 residents, but you've managed to find the ONLY family named Smith!"