Maxbhi / Elcotek Telecom — error while requesting refund

Hi, i placed an order for rog 2 touch and display with order numbers 2271510 & 2271511. After a week wait, they just cancelled the order and refunded the money to wallet, it says the invalid request when i try to refund. Unable to contact them too. I understand this is a difficult situation but atleast refunding ourselves should not be a problem. My 8, 598/- rs is stuck and i cant order the display from anywhere else. Please resolve it asap. Order placed on the 6th may.