Call centre - they do answer when you call back and they get very pissed off when you repeatedly call them asking random questions and then they ask why you keep calling them - 10 times does the trick - just block them even though it’s hilarious to annoy them.

It's about Solar rebates

Caller: ?

Rang back number not listed

Scam call number blocked

Caller: I don’t know

They didn’t answer when I said hello a few times

Scam call

SPAM

Phone rang, no one on other end, I didn't say anything. At 16 seconds I said Good By and hung up