************* Makro sells 2nd hand stuff then refuses to refund / replace

I bought a Xbox series from Makro for R17000 on 5 December. When it arrived it was 2nd hand - it even had a DVD in the disc drive. Apparently they have a Marketplace where people can sell 2nd hand thing. HOWEVER, there was a) NO indication (e.g. url change) that I was shopping outside the normal Makro business and b) that it was NOT a new product. I logged a return for it, it was collected the next day, but had to wait almost 2 weeks to get a response, only to to be told that they won't refund me since it has been used!! That is exactly what I said when I submitted the return. I also sent them photos of the damaged box when we received it. Not indicating on the advert that it is 2nd hand is misleading and false advertising. For R17000 I want a new Xbox, not someone's hand me downs!