I have been getting SLAMMED with calls from 0480 012 xxx numbers - have blocked about 20 of them and they just keep calling from a slightly different number. I've been getting at least one call a day since June 2021. I never answer (having looked up the first ones on this site to see it's spam) but it's driving me slightly mad!

Caller: 0480 012 444

Unknown number
Keeps ringing all hours day and night
Never leaving a message