Almost all scam calls originate in India. It's absolutely an indicator.

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.

As if official Indian tech support is not a scam..

I've talked to some terribly unqualified Indian support folks. And I talked to some really talented ones who saved me a lot of time and headaches.

Support quality is a function of cost, which is a function of customer value.

Low-margin businesses will hire low-cost support on whatever continent it's available.

So worst case, it's a scam. Best case, it's some useless cutrate support or sales call. Sounds like this is absolutely an indicator not to bother.

The best indication not to bother answering is that they called you.

Doesn't matter how familiar their accent sounds.

They are not calling for your benefit.

No need to get xenophobic about it.

High-margin businesses too. Useless, powerless customer support is the default. Most of the time, even in person.

Low-margin businesses always have bad support, and there's nothing you can do about it.

High-margin businesses usually have passable or good support. If your vendor of choice does not, you have chosen the wrong vendor and should switch. There are other options that do a better job.