Getting calls everyday, no response when I answer

Rang 3 times then they hung up. All it said on the caller I.D. was New York.

They called this morning with a "three ringer then hang up".
I traced them back to the 400 block on Bridge Street in Brooklyn, NY.
I decided they weren't irritating enough to go further.

same as above no answer, hangs up.

offered us 30% discount on energy costs - told her I couldn't process her request - she hung up