Unadvertised Local On-Net Unlimited Plan for Rs99!

MTS prepaid has a plan of Rs. 99 for unlimited MTS to MTS local calling. Though this offer is not given on its website. Neither CC people inform it to its customers even if someone ask for any on-net[instead they advise of some 249 or something else(i dont remember exactly), in which one gets unlimited on-net and few calls for off-net use]. This plan is offered to few chosen customers who are informed through SMS. Though this plan can be availed by all prepaid users. Just top-up with Rs.99! Sure for Delhi/NCR Circle.