Bad service- Sport Scene

I purchased my mobile Samsung A30 cash to the amount of R4499.00 02February 2020 at Sportscene, Blueroute Mall. 3 weeks later, I attempted to charge my phone and after 2 hours I switched the phone on to black blank screen. I had asked my girlfriend to try and call it, all we could hear was the phone ringing but still no screen. I immediately packaged the phone in the original packaging , included the charger etc The phone was still in immaculate condition, with not a single scratch and it still had all its protection paper still on. I then returned it to the store (Sportscene, Blueroute Mall) where they had advised that they would need to send it to the repair centre for investigation, which in my opinion was a poor practise as I had taken insurance on the phone and it was evident that this was a manufactured default but I understood that this may be their process. I had taken it in on the Sunday and to my knowledge when I called the Monday, The staff member who assisted me in this regard, was not present at work, this having told that the phone was not processed for courier as yet. This irritated me as I needed my mobile for business purposes and cannot afford to lose a day. I was then advised that the Tuesday it would be processed, which it was. Steven, the assistant called my girlfriend with updates everyday which I highly appreciated. On the 12.03.2020, I called in to find out the status of my phone, of which I was advised that it is ready for collection. I got to the store (Sportscene Blueroute Mall) and to my utmost disappointment, the phone was in a HORRIBLE state. All protective covers were skew, handprints all over and scratches on the screen.THIS IS TOTALLY UNACCEPTABLE! The phone was 3 weeks old (inc Insurance) this phone should have been REPLACED not REPAIRED. At this point, I will not accept anything less than a brand new phone or A REFUND!. I can then purchase a brand new phone that has NOT BEEN repaired or worked on. Additionally, they could not tell me what was wrong with cellphone.This is ****r systems, processes & services of such a high level group, the TFIG Group towards a consumer. I expected better practises! Call me on 021 680 1339