Domino's Pizza — not providing refund of cancelled order

Address:

Ram Nagar Katra Wazir Khan, Agra, Uttar Pradesh, 282006

I have ordered a combo deal on 23rd of march, 19. Your executive punched the wrong order of rs 525.25 that i paid through my credit card.
Once i realize that the order is wrong i complaint it to the same executive and he appolize for the same and suggest me to place an fresh order.
He cancelled my previous order with a promise that i will receive the refund with in a week and i place a new order of rs. 644.
Unfortunately i still have not received my refund even after a month of order cancellation nor i recieved any call from your concern outlet for verifying if i recieved my refund or not!