Myntra.com — not received refund in my account

Address:

New Delhi, Delhi, 110022

I order 2 shirts from myntra on 27th april 2018 amounting rs 1268 order no[protected]-3959601, however i returned one shirt and cancelled another. On cancellation and return i was supposed to get refund, myntra initiated refund process on 3rd may 2018 which i supposed to get on 9th may but i did not received any amount in my bank statement. On contacting myntra executive they said me the refund has been successful made vide transaction i'd no [protected] and said me to ask for my bank to inquiry but my bank which pnb whose executives completely reject my complaint on the ground that they had no role in this transaction. The transaction is initiated my myntra so they are sole responsible for your bank not our bank. Neither myntra nor pnb is helping me to resolve my complaint my money stucked in between and i don't know to whom should i contact. Please help me.