BSNL — Problem with Broadband

Address:

Gautam Buddha Nagar, Uttar Pradesh

I took the BSNL broadband connection last week but it didn't work well even for single day. I registerd couple of complaints but no action has been taken. A person came to our home and said that there is no problem with broadband and problem is with the line. He gave the phone number of lineman. I called lineman and lineman said there is no problem with the line.
I am not sure what should I do next. I am thinking of getting another connection if this doesn't work for another 1-2 days.

Landline number of braodband[protected]