The Best Phone Call Ever

ME: Tech support.
OLD WOMAN: Water heaters?
ME: What?
OLD WOMAN: Water heaters?
ME: I'm sorry, I don't think I understand.
OLD WOMAN: Water heaters.
ME: I, uh...
OLD WOMAN: Water heaters?
ME: ...
OLD WOMAN: Is this the right person to talk to about water heaters?
ME: I shouldn't think so. We're an internet service provider.
OLD WOMAN: You're not Home Depot?

Honestly I was hoping she had actually meant to call an ISP and just say "water heaters." Oh well.