They call claiming to be from "wise capital" or saying that I've signed up to some online trading training course or have signed up for calls wanting information. They get really pushy after I asked for my number to be removed saying "how would I have your number if you didn't sign up?" and they get rude saying they just need a few minutes. Next time I'm going outside and literally just screaming into the phone. They have an accent, but unsure of what south east asian country they're from.

It's a Sydney number but there's a second silent delay while you're being put through, which makes me think this is an overseas scam with an autodialler.