Samsung lost my device!!

Hello Samsung (-SUCK). I handed my Samsung Galaxy S7 edge into your walk-in center in Constantia ABOUT 6 WEEKS AGO for a simple screen replacement under warranty. During the past 6 weeks I have sent numerous emails and made telephone calls about the progress on my device WITH NO RESPONSE. This week I decided to visit the center in Constantia to go and have a look at what is going on and found that IT HAS BEEN CLOSED!!! Nobody informed me of this!!! I then tried to phone your national call center that DID NOT HAVE A CLUE on the status of my device or where it is!!! I thought I was the loyalest client of Samsung, supporting your devices over the past 10 years but this is the type of service that I get. After 6 weeks I am totally in the dark and do not know if I still HAVE a device!!! I have shared my frustration with my friends and colleagues about the absolute appalling, non-existent service from Samsung!!! MY NEXT DEVICE IS AN IPHONE, FOR SURE!!!