[Resolved]  RCOM — Illegal billing

My rcom dongle no is [protected](gujarat ). I bought this in early 2015 and later (aug 2015)changed it into postpaid connection of rs 1000 monthly unlimited plan. All goes well till apr 2016. In that month rcom converted to rcom jio w.E.F 31st may 2016. As per the advertisement we had to switch to jio with the same plan. But when it changed to jio, for the first 10days there was no services at all and the services resumed later on. We all were informed that our plan is changed to rs 1100 for 5gb. Now on 18th jan i called and complained about the same that earlier it was told that the plan will be same but now you have changed, so either you restore my earlier plan or discontinue the services. They lastly discontinue my services in 1st week of aug 2016.
Two questions arises;
i) can a company change its plan itself, or the consent of the customer is required. If they changed themself, and the customer complain about it, then how come he is liable to the company.
Ii) as the services of parent provider( here-jio infocomm) is free for all, then can his partner company forces its customer to buy the same service at much hefty price( here for 5gb it is rs1100, so for 80 gb it will cost rs17600). It doesnt appear to be a fraud. ( rcom net services were stopped and merged with jio as per the agreement between those two company, it was not customers demand but a forced service to customer).

Later on, in my case they billed for rs 4990. Customer executive from their company & sourced service providers called me repetitively and i was made to explain the same thing to everyone. At last they asked me to pay rs 500 as full and final. I made the payment of rs 500 in jan 2017. But to my surprise, their advocate called me and apprehended for the dues- which is itself illegal billing.
Please look into matter