BSNL — regarding broadband connection problems

dear sir/ madam, i jadav alpesh g administrator of jay bhavani education and charitable trust using bsnl broadband since 4 years and getting regular problems of connectivity since last 3 years, i registered complaints many times but not getting proper response. when i tried to communicate with the responsible officers they are not responding. my customer id is-[protected], please do needed actions and solve my problems. thanking you.