Terrible service

I really wanted to upgrade to the s10,, but I am so disappointed with Samsung at this stage. My S8 broke and it was still under waranty, so I took it in on the 4th of February,, they told me it will take 5-7 working days and it is 4 weeks later and I am still waiting. When I contact them they have a different story with regards to the phone and when I go in they tell me it will be ready next week. Today I went back to them and they told me I have to drive to another mall to get my phone and when I got there they told me my phone is still not ready. This is ridiculous and I am really contemplating on not taking a samsung ever again,, because of the poor service. Everything happened at Menlyn shopping centre..