Appalling customer service.

I had an issue where my phone was collected for an assessment of the screen damage at Komu Digital Solutions (Preferred technical repairer for Dialdirect) and some technician at Komu went to change my phone's software for which was not my instruction. For that reason, I can't do any updates, can't install certain apps onto my phone as Google Play tells me that my device is not certified. I've been to a Samsung store and they quoted me R300 to resolve this issue that Komu Digital has caused. The Samsung store in Canal Walk told me to go to weFix to get my phone sorted out and there they noticed that my phone was re rooted with the incorrect software, ,hence certain apps and some updates can't be done