Have a look at the demographics of who the ad was shown to, I imagine that your ad was just shown disproportionately to users in India. Targeting anyone outside of the major markets (US, UK, etc.) is much cheaper, so it's likely that a combination of Facebook's Ad Auction algorithm and their optimization algorithm resulted in a skew of who was seeing your ads.<p>If these are user who've liked your Facebook page then you can get a list of them from your admin account and just send a few of them messages to find out why they liked your page.
I wonder how effective it could have been with testing the ad copy. It certainly didn't catch my eye when reading this article. But getting a bunch of likes immediately after starting ads -- that's a great way to get things rolling!