Unknown Number calling but no one is speaking from other end.
Call from this number with hangup about 4 seconds after answering. On phoning the number, asian call centre voice claims to be from Irish Revenue! went no further.
When I asked the person to prove to me he is from Tax, I got a bogus badge number spoken quickly and call closed or call closed. I have a fun recording of this.
But as I have seen in other comments Gardai can't do anything.