Idea Cellular — balance deduction even I have recharged by 149 plan

Address:

PLOT NO 15, Vellore, Tamil Nadu, 632007

I have recharged my no ([protected]) by 149 on 5th december. On 6th december i have received the message of balance deduction from my main balance. After 5 unsuccessful attempt, i was able to talk to their customer care executive who informed me that my 1000 minutes is over. But i can see in the idea app that i still have 993 mins. So i don't know why i have been charged for the calls.