Reliance Communications — usb modem

i brought an USB ZTE CDMA 1X MODEM 4 days before from Reliance Mobile in kodungallor trichur. This is a post paid connection. thinking about the mobility and net connection speeds up to 144 kbps I paid Rs.2250 for this pathetic internet connection. its getting disconecting in every 5minuets and when try to reconect its showing dormant. I have done all the basic trouble shooting steps to increase the internet connection. When I called Reliance Customer Care I was transferred to their technical team, which is even worst.