Did not answer. Left no message.  Called number back and got a recording about city offering assistance.  Pressed "1" while the recording was playing, and it immediately connected me with a person. They said hello, hello, etc. I said nothing. Finally they hung up. I did it 10 more times to keep them busy and give them some of their medicine.

Calls occasionally, never leaves message, DNA evidence of a scammer telemarketer. Now blocked.