BSNL Broadband
Often gets disconnected

I am experiencing the trouble of BSNL Broadband often getting disconnected and Error-815 appears, also while connecting the Broadband Error-718 appears. I have regulerly registered the complaint on 198. Every time the engineers at Ambarnath exchange gives the reason that exchange at Kalyan is having some fault. So far it has become the daily routine of disconnection. Will the authorities at Kalyan Exchange look in to the real problem and solve once for all. The authorities at Ambarnath Exchange ask for complaint registration but the person who responds to the complaint next day insists not to register complaint but to talk to the Engineers at Ambarnath exchange and sortout the problem. Will BSNL ever provide uninterupted service of Broadband to the customer here after.