Mobile service
Negative balance

I have a Airtel prepaid connection. I recharged my mobile worth Rs 30.00 and the balance was 24.00 rupees. I talked to my parents for 4 minutes, the balace was around 21.00 rupees. But after 1 minute got message with balance -9.00 rupees. Suddenly I socked finding the balance. How is it possible as I never made a call to anybody? How fraud is this?

Please suggest me what should i do?

Company: Mobile service
Country: India

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