When you are pretty sure it a robo scammer,
1) either do not answer or
2) SCREAM int the phone "the job is done and there is BLOOD EVERYWHERE, the police are one their way." then hang up. Keep records to see if they ever call back.....or
3) "Stop calling sweet heart, I will Be there soon, I'll can't leave until my husband (or wife) goes to sleep," and hang up.. or
4) "your stupid wife (or husband) is at my door and I'm going to shoot her?
but it is best ot just do not pick it up, because that tells them it is a good number so they can sell it to another robo
I got several calls from them to. I called their number and used the automated system to take my phone off their call list. Interesting, their phone system didnt identify the name of their company.