HappyEasyGo — Refunded by airline but I didn't get the same till now it's 3 months over

My ticket got cancelled by Air asia airline on 30.01.21 and from that day it's 3 months over and I didn't got my cancellation amount.first they told due to vivid 45 to 90 days required to receive the refund.then after 90 days they told me that systematically we couldn't process and we will do it by manually and for that they ask me to give AIR ASIA case number.After giving the case number they assured me that I will receive the refund amount but it's till now they are not refunding. I have requested them by phone and mail several times.but only they are assuring me and telling me to wait for some more time...more time.. plz help.. thanking you.