Airtel — I have recharge but recharge not done by airtel and amount also not returned back.

My mobile number is [protected] and i have recharge my number by 448 rupees on 1 september 2018. Amount was deducted by my account but recharge not done in my number. After complaining bank has said transaction is succesful but airtel are not refunding my amount. I have mailed them from ([protected]@gmail.com) so many times but no response. I want my deducted amount back.