@vishalrao The offer was only specific to our society. It's a 1 month trial. Either 2500 or 3000 amount to be paid (which is refundable) for 50 or 100 Mbps plans respectively. Both unlimited, actually 1500 GB FUP which is enough.
So, after a month you can continue with the offers they provided or you can opt out and get the refund.
Actually, those guys are offering me 12+5 months additional so I might take it. 10190 for 17 months including taxes is a fair deal I think.