Makro - *****ing from customers

I ordered a pair of headphones from Makro in November 2017, only to be told the next day that they don't even stock these anymore. Annoyed, I resigned myself to this, and asked for a refund. They assured me they would work on it ASAP. And that was the last I heard of it. I've emailed, used their online "customer support" and called. To no avail. Even called five times today, only for my call to be hung up on every time I was transferred to a different department. Just plain thievery.