MTNL (Internet Services) — poor customer service

Address:

North East Delhi, Delhi

sir/mam,
i am the user of MTNL internet services in C-228/14 A, street no 10, chauhan banger new seelampur, Delhi-110053. The connection is subscribe on the name of Raza Ahmed. i have been facing some serious problem with my internet connection for last one and half weeks. It is not working. i have done many complaints on the phone on this number 1504 to MTNL internet services department. But they give me only assurance all the time i made a complaint that your connection is being repaired and all that. My connection was repaired for just one day. After that my internet connection stopped working again. And again i had made complaint again on this number 1504. But no result i have got so far. i am persuing my higher studies. And my most of the work is done through Internet. so i am in big trouble for this.
kindly take some adequate action against this problem. we would be very thankful to you.