Makro Sucks

I bought a headset from Makro online. It was delivered last week Wednesday, 21 Nov 2018. I can't use it in my computer, so I have been trying to return it to you, but so far have been unsuccessful.

My query on your website has been ignored.

My email to the support centre has been ignored.

I went to my nearest store to try and return it, but after about an hour of NO service, I turned around because it was busy so I thought I would go back,

Phoned the online customer support help desk. They told me to go to my nearest store (not in a very friendly manner).

Went back to the store and once again had to turn around, because who has three effing hours to stand in a query for?

HOW CAN THIS MATTER BE RESOLVED, PLEASE. TOMORROW I WILL BE TOLD I AM TOO LATE, DESPITE MY NUMEROUS ATTEMPTS TO RETURN THIS ITEM TO THEM.