You might want to ask for upgrade, call their CC. In starting I also paid for 5Mbps plan but the sales guy called and and said "plans have changed today, would you like to upgrade to higher speeds at lower cost?"I stay in sector 40 Gurgaon adjacent to your sector and here triple play is offering
10 mbps at rs 1000
20 mbps at Rs 1250
50 mbps at 1750
100 mbps at 2000