Internet connection

I called rain many times to make them aware that I don't have internet connection. My account keep on escalating every month and that time i dont even have internet. I asked to cancel my subscription because I cant keep the router that I cant use and besides I am being charged every month and that time I don't even have internet connection. Today when I called I spoke to a very rude consultant by the name of Kgenudi was arrogant and couldn't assist with my query. But my question to rain is why is the customer suppose to pay full amount for the service that was not used or am I being charged to keeping the router at my place and for the sim cards???