Airtel — charged for mobistore subscription without checking or request

I received the below 2 messages directly without any request or checking for this subscription, so refund back this unfair deducted amount to the balance of my number [protected]:
SMS 2: MOBISTORE service has been activated @ Rs60.0 for 6day(s).Txn ID S[protected], 18Jul18 04:19. Service will be renewed after validity expiry.To use, click http://mobistore.mobi (data charges apply).To deactivate, call or SMS STOP to 155223. More services? Call 56789

SMS 1: Thanks for choosing MOBISTORE on your Airtel Mobile.You have been charged Rs60.0 for 6days.A/c balance: Rs8.92 at 16:19.To deactivate, Call or SMS STOP to 155223