Alliance — Interrupted broadband connection

Address:

Kolkata 700039

I am an alliance broadband service customer. My problem is that the internet connection is very unstable and many a time in a day it goes off and comes back automatically. I have tried to contact with the customer care phone number provided by the website of the said company but nobody seems eager to pick up the phone. Only in one or two occasions i had the chance to talk with someone, but the problem persisted even after talking with them, as nobody sent any engineer to solve the problem as promised.
The local service provider is also not ready to pick up the phone. This is highly unprofessional and disturbing.