What do you get when you clone Samsung and their appointed service providers.....NOTHING

How can Samsung appoint such *********** service provider? Leave its clients out in the cold with nowhere to go. If I phone Samsung they simply tell me to speak to the service provider. My Samsung S7 was dropped at the service provider on 11 November and today, almost 4 weeks later, I have not had a resolution. The owner (Elcardo) of the repair company is not even coming back to me - he is simply good at making promises and has now in totality stopped. I am not surprised that his staff is so *********** because the example is given to them is absolutely pathetic. My phone is still under warranty and after it being with them for 2 weeks I was told to come pick it up. When I switched on my phone the problem was exactly the same. Now, 2 weeks later I am not able to get hold of anyone at Unitronics and they are still in possession of my phone. I am desperate to get the phone sorted out because this is the second Samsung S7 in less than 2 years that is giving major problems - the first one was replaced by Samsung (that is the one that has now been in Elcardo's possession for 4 weeks) but apparently nobody on this earth can trace the courier of the new phone to me. I need this resolved because I am now at my whits end.