Independent TV — payment taken in advance and channels are stopped

Address:

Rohtas, Bihar, 821307

My reliance big tv service number is[protected] in the name of manish kumar. Which is converted to independent tv.
I have purchased and paid amt 2499/- for 2 year realiance big tv plan, in feb 2018, according to this plan i will be able to view all channels available in reliance platform for 2 complete year and fta channel for complete 5 year. But now again i am facing difficulty in viewing all available channel as the error 200 is reflecting on many channels, like aaj tak channel is also blocked by you, but it's fta channel.
When spoken to your customer care, you told me to pay 780/- to upgrade my settop box, but why should i pay you, to upgrade, it's a agreement between you and me for 5 year for which i had already make the payment. And there is balance of 800 in my reliance account. Which is also pending with independent tv.
Plz help.