Vodafone India — poor service

I cancelled my number ([protected]) due to poor customer care service on 27-july-2017.

* i requested for my bill from 3-aug-2017 and i send nearly 10 emails, but i didn't received my bill till 22-aug-2017.

*suddenly i received a call from vodafone on 19-aug-2017, stating that i have to pay rs.386/-, i asked for the bill but the agent on the phone was rude to me and cut the call. I received the bill on 22-aug-2017, but the last date to pay the bill was mentioned as 19-aug-2017 and now they are telling that i have to pay the last fee, which is completely ridiculous. I even mailed to nodal and appellate, but the same poor customer service. Worst network... Worst service...