Reliance Jio Infocomm — fake scheme by jio-harassment postpaid customer

I was a post paid reliance jio prime customer. I have paid rs 399 for availing services for 70 days /also paid for summer offer scheme however they have additionally charging 309 per month in their billing, hence i feel all scheme by jio in substance to cheat post paid customer.
How can they charges for two different services where as i am availing only one service.
I was always loyal to reliance industry however this experience literally shocked me.
How they can be unbiased to post paid customer like this, else they should have guide us to protect our interest.