I am a new prepaid user. As a user we may not have a check on our data usage often. So you must have a provision to stop providing data once we reach the data limit as per the plan taken. Instead I have recieved the message saying your data limit is reached. But kept charging for the usage till the balance in the account turned to nil. It came as a surprise for me when I went to your shop for recharge. I hope you would look into it.