Don't hang up -- answer the phone, have a pleasant chat, ask them how the weather is in Mumbai (Bombay), talk about anything, but DO NOT let them have control of your computer. They will install something that locks your data then demand several hundred dollars to give it back to you. As with all kidnappers and blackmailers, if you pay the ransom, they will just demand more. Waste their time on the phone, and if everyone does this, it will deeply cut into their profits and it will drive them out of business.
I received 25 calls from this number234-567-89, in one day. First no one answer, after it was a man with indian accent
told that it was from US GOVERMENT