Reliance Big TV DTH Service — Pathetic service from Reliance

This is regarding the pathetic service rendered by Reliance Big TV. I purchased a BIG TV in September, 2008. I was told that I will receive the service free of charge for the first 3 months. True, I did receive the signals free for the first 3 months. When the 3-month period was about to end I call up the call centre to know the exact date of expiry.
I was told 23 December, 2008 and I cannot do a recharge before 23/12/2008. As I was on leave from 20/12/08 and was returning back to Mumbai only in the new year, I confirmed with the call centre whether I can do a recharge in the new year. The call center guys told me that I can do the same and the signal will stop after 23/12/08 if I failed to recharge.
To my surprise, when I came back in the nw year, I realised that I was still receiving the signals and was able to watch all channels. On contacting the call center, I was told that I will continue to access the signals as the money was being deducted from the set top box and my current balance was -383.

I really don't know how the Reliance guys arrived at that figure. Fine, I asked whether I could recharge for Rs. 1000/-, and change the plan, they said yes but I can change the plan only on or after 22/1/2009. I recharged for an amount of Rs. 1000/- and called on 22/1/09 to change my plan to 'Starter 3' amounting to Rs. 212/- per month. As per the call center guy, the plan change was sucessful.
Again to my surprise, I was able to view channels like VH1 etc which were not part of the 'Starter 3' pack. I called the call center today (23/1/09) to query why I was getting this signal. The call centre guy tells me that the 'Starter 3' pack is active on my account, however, the previous 'Premium pack' was not de-activated by the previous call center agent. As a result of which, my account balance which was Rs. 606/- on 22/1/09 has been reduced to Rs. 582/- today (23/1/09).

In other words, I have been charged for a service which I did not wish to take because of a stupid Reliance call center agent.
I really plan to take this case further. I have heard this company makes a huge money by overcharging it's customers. Action needs to be taken so that such people are not allowed to enter the market