Unknown, unsolicited call, I didn't answer and they didn't leave a message

Got call & answered no one spoke on other end. Look like scammer going to pass my number as lead generator. Asian biz now selling numbers as leads .

Picked up the phone, didn't say anything (my go-to response for suspected spam calls). The caller hung up without saying anything.

Caller: Dont know

They called and I answered but they hung up straight away. Called them back and apparently the phone is switched off. Obviously nothing important.

Caller: Telemarketers

Hiya blocked as Telemarketer

Answered hello & got heavy breathing. Block!