Makro terrible service delivery!

Terrible service from Makro Gonubie once again, I bought a Samsung A06 yesterday for work purposes, and then a few hours later, the screen gets lines on it and starts jumping. So this morning I take the phone to Makro and these people are telling me that I have to wait 21 days to get a refund or get a new phone! It's for work purposes and there is absolutely no way they can assist me. I'm very disappointed in the service at makro at first it was the washing machine I bought which took then forever to deliver and I live right down the road and now this! People dont buy these items to play games.