Airtel — game arena service on airtel

Airtel has arbitrarily started a paid service on my number, charged my money and then is telling me about it. All this at 4:40am! Why and how will i start a useless paid service in the middle of the night? I have not started any service from my side. This is absolute cheating and harassment of customer.

Please resolve this issue and refund my money ₹35. It is not about money but it is about ethics and business morals, which airtel seems to have lost.

Here is the text of the message and i have also attached a screenshot for reference.
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Game arena service has been activated for mobile number [protected] without the permission of the customer and rs.35 has been charged from my balance.
The following message i received:

Game arena service has been activated @ rs35.0 for 7day (S). Txn id s[protected], 06may18 04:40. Service will be renewed after validity expiry. To use, click http://bit.ly/2yeIAGy (Data charges apply). To deactivate, call or sms stop to 155223. More services? Call 56789
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