I purchased Aircel card on hardselling. However, the company does not have mobile towers even in big city like pune. I mistakenly left on my data and I was ripped off solid by the company. Even if you consume a few MBs the bill comes in hundreds of rupees. Frustrated, I migrated to vodafone.
So do not purchase AIRCEL Sim and if you have one, NEVER EVER SURF NET!
Even after I migrated, they sent billing and I had to pay more. Only when I migrated they called back apologizing but once bitten, twice shy, .