MTNL Delhi — faulty phone and broadband

Address:

110080

Sir my mtnl phone and broadband are not working past 2 month i had register complaint many times but no action is taken by mtnl (Sangam vihar area) every time i register a complaints they said ok today we resolve it i also mentioned sdo about my problem they said there is some problem in underground wiring and it will take 4-5 days but it cross 15-16 days no action is taken