BSNL Wimax- Internet Brodband
Slow internet speed

I am a BSNL Wimax user. And I am using such internet service provided by BSNL india since last few years.

I was getting good downloading and uploading speed, but just from last few weeks it has gone so slow...

I am not getting the desired speed at all... the speed has gone 60% down than it was before... what can i do now..i am paying 1100 Rs / month and I am not getting the exact speed I should get...!!!