Airtel — poor network quality and internet

Address:

Hyderabad, Andhra Pradesh, 50018

I am an airtel postpaid customer, recently ported my number from vodafone.
Every now and then signal is dropping all of a sudden in most of the places even in hi-tech city and mindspace areas in hyderabad. I supposed to get 4g or 3g but always i get either edge connection or no internet.
This is really annoying me whenever i need internet in urgency i never get it even though i have enough internet allowance. I work inside building no 20, raheja mindspace, hyderabad.