Product not available and no refund given after 16 working days

I ordered a product online, which was not available. According to Game I was refunded on 26 January and told that the refund would take 3- 5 working days. No refund in that time period. On working day 8, when I reached out to Game I was told that the bank could take another 7-10 working days. It's now working day 16 and still no refund. My bank has no record of any refund. Will not be using Game online again. 1. They advertise products that are not available 2. I am waiting for a refund after 16 working days