Airtel — Main Balance deducted towards incoming/outgoing call

My name is pavani and I'm using Airtel for few years now. I'm staying in Qatar. On 17.12.2023 as I'm not able to receive OTP I recharged with Rs.500/- towards main balance. I came to India on 22.12.2023 and when I checked for main balance it's showing Rs.191/-. I contacted customer care they informed that I made/ received an call from India on 20.12.2023 at 7pm and Rs.396/- is deducted.

It's completely wrong and disappointing as I don't use my Airtel number for calling whether incoming/ outgoing in Qatar, I only use my Qatar number for calling purpose. After coming to India on 22.12.2023 I activated my Airtel number to calling mode and when I checked for main balance I found its deducted. I didn't receive any call or message from India on 20.12.2023 as stated by customer care.

I'm very disappointed with Airtel, whenever I recharge with Rs.500/- main balance is deducted towards calling/ internet usage. I faced same issue 2 times before.

Please help me to resolve this issue as early as possible.