The best thing is to constantly answer their questions with a question. First ask them if they mind if you record the call for legal reasons. This will confuse them and throw them off guard. Then ask them to repeat their name, their company's name, and their company's address. Then have them state the purpose of their call and remind them they are being recorded. You most likely won't get this far before they hang up; because they have only a basic understanding of the English language and are easily intimidated by many questions in a row. Ask what's color their socks are...who won the World Series...what is an apple...where is the moon.... Anything. This will slay them and they will not ever call you back, and vengeance shall be yours!
Have had multiple calls from this number. They call at VERY inconvenient times and do not leave a message. I have caller ID and I am on a Do Not Call list.
Got another call from this number. Talking about a medical claim and what hospital I had my procedure done. I hung up and called them back asking to speak to the Indian name.....Ha! Ha! They hung up and haven't call back. Now, the jokes on them I bet they wouldn't call back.