Sounded like a call centre, conversations in background, Caller obviously did not listen to message as he said "Hello" several times before hanging up without leaving any message.

Has rung twice but leaves no message. Rings off after 3 rings. Have blocked it now.

Same got a call today but they didnt leave a message. Just decided to block it as its obviously a scam call.

Caller: unknown

They rang again, left no message of course.

Didn't recognise the number so sent it to voicemail. No message left so probably a scammer. Blocked.

Its an unknown number to me, so just let it ring out and then blocked it.

annoyingly knew my name

Rang and as usual no message