Will weirdness never end?

2:30 am. The bell (actually a phonelike device) connected to the front door rings.

"Hello."
"Hello."
"Do you have tea?"
"Who is this?"
"This is Grinberg from the neighborhood. Do you have green tea?"
"No."
"Oh. Sorry to have bothered you."

Never heard of any Grinberg. The conversation was in English and the speaker sounded native.