I had the opposite experience. I went all out fucking with them for like a week.

Keeping them on the line forever while I pretended to look around in my house for the information they wanted.

Also tried totally losing it on them with every vulgarity and obscenity known to man. A tirade that would have given a child PTSD for life.

All they did was share my number with all their scammer buddies and the robo scam calls just increased ten fold.

The only thing I have found that works is I put a call blocker on my phone for any number that isn't a contact. They get a message saying this number isn't available. With an option to leave a message.

This has noticeably decreased the amount of scam calls I get.