As it was an unknown contact I just let it ring to see if they leave a voicemail. Scammers would not be likely to leave a record of their voice. No message left. Blocked the number.

This number called me saying they were from suicide prevention and that I called them, there was alot of people talking in the background, I said, sorry you must have the wrong number, she said, "nah I don't" - with that I hung up and blocked the number!!