Received call.  Caller ID says "name unavailable".  Didn't answer.  They didn't leave a message.  Prefix starts with 0.

818 is my local area code.  Knew the number was spoofed before I answered since no legit telco prefix starts with 0.  Female caller from "Montrose Innovations" offering 30% off remodeling, construction, etc. in a joint program with the city of La Crescenta.  Didn't have a street  address or contractors license number.  I told her:  Why would I want to do business with someone that calls me from a spoofed number, doesn't have a street  address or contractors license, for a joint program with a city that doesn't exist? (La Crescenta is unincorporated LA County).  She was still arguing with me as I hung up on her.

Said the were D. P. Design.  No License; Bogus telephone number.  Can't block a bad number.

Illegal spoofed number, and illegal spoofed number = SCAM.  Didn't answer (I NEVER answer calls from unfamiliar numbers).  Blocked this number.