MTNL — poor speed

Address:

Mumbai City, Maharashtra

To,
The concerned authority,
MTNL Mumbai.
Respected Sir/madam,
I have lodged a complaint from many days but no action has been yet taken regarding poor speed and low bandwidth.My complaint no is98333 and My landline no. is[protected]. It is an combo plan.
Earlier i use to get proper speed but from past 10 days the connection is very poor.
Please take appropriate actions regarding this.