I didn't even get that far. When they asked for Mrs./Ms. Notmylastname, I said "No" and they were perplexed. The first one shifted into the gear of asking to speak to "the man or lady of the household", and I was too tired to think of explaining that there's one man and two ladies in this household; instead I said, "You're talking to me. What are you selling?" The next one asked if he'd called the Notmylastname residence, and I said, "Peter is one of three people who lives here," but I don't know if I successfully conveyed the point that not everybody lives in a nice little nuclear family with all one last name. Sigh.