MTNL
Oadband speed

I am having a MTNL Broadband Connection No. 27343302; I am facing too many problems like slow Browsing, DNS not pinging, cannot use phone and Broadband simultaneously. I talked many time on their customer care but still the problem is same, even I send a mail to MTNL people and the subject was If you have any shame then kindly rectify the problem which I am facing from last 4-5 months...