Myntra.com — refund my online payment

Address: SHREE GURU HP GAS COMPANY, 628201

Hpgasbkng no-507605 con-601836 bkng clrd 13 may 2019 shree guru hp. Nazareth in tamil nadu. Top 9909 http//expat. Hpcl.co.in//ezpay//h//[protected] to pay for refill.
I paid the amount rs 780.56 via above link on 16.05.2019. 7.03am.
Transaction id: [protected] and got the successful transaction message. But when the gas delivery came the distributor denied for the online payment received confirmation. However the amount is deducted from the bank. Please help me in refunding it. If this is the case i will not to do online payments