You think we care? Look to your own countrymen. People from your country come here and spam their crap or complain they're getting scammed when they're most likely scammers themselves. Because of them, I find ANY post out of India suspect. You can thank the people of your country for that.
If you KNOW you owe no money, or believe the call was from a fake debt collector, please take the time to read this:
http://www.consumer.ftc.gov/articles/0258-fake-debt-collectors
I also received a call from them on my mobile phone and I live in England. They left an automated message on my answerphone with a case number. I don't have any debt so either wrong number or scam to get money!!!