Airtel DTH - Airtel DTH refund issue

I had disconnected **********, this connection on Nov **. I was asked to file a setup box handover request on Nov ** and I filed the same. I am not clear why this request should be made explicity when I have already disconnected DTH on Nov **. Still I went ahead and filed the setup handover request on Nov **, *********, but it was closed on Nov ** as airtel customer care quoting rains.When I was continuously following-up on the refund for Rs. ****/- the balance as on Nov ** in my airtel account I received a call from airtel on Dec ** quoting I would be refunded only Rs. ****/- which is the refund amount as on Dec **. Why should I pay for a service that doesnt exist from Nov **?