Almost all murderers are men, therefore if you see a man he’s probably a murderer.

It’s not an indicator.

Good morning, sir.

Your second sentence doesn't follow from the first, for the same reason as the Bayes medical test paradox.

I don't care if it's a scam or a call center, I hate both.

Agreed, but irrelevant to the thread at hand.

The accent of the caller is not a useful signal.

The very fact that they called you is a pretty good indication that you do not want to talk to them. 99% strength.