Caller: Scammer

Automated call that pretends to be a representative of Border Force claiming they've intercepted a parcel addressed to you containing illegal components, and that an arrest warrant has been taken out in your name. Asks if you want to speak with a representative of Border Force.... aaaand I hung up there. As if they'd use an automated call to tell you there's an arrest warrant out in your name. Sheesh.

First you'd hear about it would either be an official letter, or a knock on your door, depending on the severity of the alleged crime. And by that point it wouldn't be Border Force's job - it'd be customs and/or the AFP.