Mahanagar Telephone Nigam [MTNL] — dead phone from 7 months

Address:

New Delhi, Delhi, 110031

My mtnl number is 22074150 .I registered complain on 1/9/2018.Docket no is 573.till now on 28 March the problem is not solved.plz why the mtnl application is not perfect and I think government servant don't done there work properly.so long time the complain not done.i even call to customer care.but the problem not solved.plz do it urgent lu
Thank u