Suggest good Unlimited Broadband service in Hyderabad

Hi All , We are curently having BSNL with 900 combo plan (unlimited ) at home ,but for past two weeks dowload speeds are not exceeding 60 kbps ,complained twice but no use ,thinking of going for private service provider,pls suggest good service provider having unlimited plans in Ameerpet area ,wat abt Beam Fiber ,any reviews ? how is its connectivity in Ameerpet area . TIA

You crossed 8 Gb and they reduce your speed and change to beam 10 mbps for 1100 INR or rs