Woolworths disappointing

I understand it has been the festive season and many companies worked with minimal staff been available. Last year I get a call from Woolworths that I have a credit on my account, needed to authentify myself go to a branch with ID and bank statements, which I did I was at the store for over 30 minutes, while the lady was interacting with head office, I then had to send an email with my id and bank statements which I did BEFORE Christmas till now I have not received my refund, have not got confirmation of the amount of my refund, I keep emailing and keep getting a response it has been escalated and I will get feedback in 24 hours some of the mails said within 72 hours, how many weeks, months must a person wait for proper feedback from Woolworths and actually get a refund, also are you refunding interest as well?