I'm on MTNL DSL_999 Unlimited Plan and for last 1 week have been facing problem of extreme slow downloads ealier it be around 250kbps but now max is 42 kbps i know 250kbps is for 1 mbps but now the speed is gone down considerably low. I have complained everywhere i can CC , 198 even called the Exchange Enginner in my area but they just call and say "Internet chal raha hain na"What can be done about this unprofessional behaviour ?