BSNL / BSNL broadband — my modem is not working well and stop after half hour

Address:

Hisar, Haryana

sir,
my modem cannot connect to the server many times.i have connection ed of broadband about 2 week.i have complained in the bsnl office,beawar but they don't carry they are too careless.my land line no is [protected]. and broadband i.d. is mitra_sachin2yahoo.in .net always stop after an half hour .so please help me and solve my problem