Tata Docomo — inactive of my photon connection

Address:

Ranga Reddy, Andhra Pradesh, 500092

My photon account number is[protected] and i have been paying the rental and the bills regularly but not using the data card for the last 6 months due to my system problem. But to my surprise yesterday i found that the connection was deactivated even though no due amount is there. Why? Pl restore the same as soon as possible otherwise i will close the connection and switch over to other service provider.