BSNL Broadband — No Connection or link failure

The services of BSNL BROADBAND in Kolkata is worst. Each and everyday we have to face the same problem of link failure(error:678). The complaints done via 1504 (customer care no.) gets attended and corrected after a minimum of 3 to 4 days. Either "server down" or "at maintenance" these are the common excuses of the local telephone offices and executives. Even if they are corrected it only stays stable for 1 day maximum and again the problem persists. If this continues then we people are left with nothing but to shift to the services of other broadband providers. Its an earnest request to you to please see to this matter and it'l be very nice and kid of you if you can resolve this problem as soon as possible.