Mahanagar Telephone Nigam [MTNL] — dead telephone line not being attended

Address:

LIC OF INDIA, DISTANCE MKTG CENTRE, NEW INDIA BUILDING, GROUND FLOOR, S.V ROAD, SANTACRUZ (WEST), MUMBAI-400054, Mumbai City, Maharashtra, 400054

This is LIC office in Vile Parle Mumbai having tel no.[protected]. Telephone is dead since 13/02/2020, complaint was also lodged with docket no.4036.
In this regards, we have contact MR.Ojha, MRs.Masure, Mr.Sanajy also, we have also spoke to kandivali and goregaon office too.
Despite our regular follow ups will many official, the same has been not attended so far.