Need Advice: Jio AirFiber bill

I have a jio airfiber connection which is getting billed 6th of every month.

Recently I shifted from my previous house and no longer needed the internet service. So I dropped a mail to jio service on 4th asking to disconnect it.

On 5th, they replied back saying that they will disconnect it in 12 days. But on 6th, the bill still got generated.

When I asked them about this, they are saying to pay the bill as disconnection will take 10 more days. I'm not even using a single bit of the data.(vacated the house).

At this point. I'm honestly pissed. I see that Jio tries to walk over it's customers with it's more of a monopoly status. I mean, how can they expect me to pay for something even after I asked for it to be removed. How difficult is it for them to suspend my account as soon as the current validity ends ?