Idea Cellular — cancel postpaid connection

Address:

Bhopal, Madhya Pradesh

I didn't use my sim at all. Even idea company generated a large sum bill. I also request them to close my connection and ask her to about documents required but he didn't tell me anything. Just said connection will get closed. I also get cancelation e mail on my gmail. But they are still calling me to pay bill. Now. I get frustrated from them and need a solution