Idea Cellular — Deduction without stopping the internet

Address:

Mumbai City, Maharashtra

I got 50 MB 2G internet data for 7 days today[protected], which I used, but the excess of Rs. 83 was deducted from my balance for no reason (as my usage was too less after 50 MB). My compliant is after usage of 50 MB data, my Internet should automatically get disconnected (which is automatically disconnected after usage by cellular companies such as Vodafone, Tata Docomo etc.) This is not the first time by IDEA, I had this same issue previously also. So I request you to take action against IDEA and help me get my money back.