[Resolved]  Idea Cellular — refusing to refund amount what I paid excuse while porting out

While porting out i have paid excuse amount than bill amount taht is 317.8 to make sure there should not be any problem.
Now i am asking to refund excus amont and security depoasit, they are saying this is with reference to your email regarding refund. We wish to inform you that your idea mobile numbers [protected] is permanently disconnected in our record with effect from 30/oct/2018 due to port out. Further, we would like to inform you that security amount will be delivered at your registered billing address within 60 days from the date of permanent disconnection through cheque.
They mentioned disconnected in thair record with effect from 30/oct/2018 due to port out, then how can idea genarate the final bill on 16/11/2018?
If i have not paid the bill will idea say like this?
If customers not paid the bill thay will not allow to port out,. Like thet if due is from thair side thay have to clear that.
Idea is cheating people.
I need my money back..