Mahanagar Telephone Nigam [MTNL] — phone 27452691 not working

Address:

4 Saraswati bavan bungalow near Swaminarayan temple near Krishna dairy, Raigad, Maharashtra, 410206

My phone 27452691 of mumbai mtnl is not working. I have complained online and offline they close complaints without attending. Whenever i ask them they tell the technician is not there. They dnt answer properly when i ask them that why is complaint closed i have called local office several times they note my number and tell that it will be resolved immediately but nobody turns up when u ring again u recieve same answer
When i complain online the complaint gets automatically