False Repair report - Refuse to repair device under warranty - Poor service

My phone was taken to the Canal Walk repair center on Monday 22 March 2021, For selfie camera not working and ghost typing They told me come back in one hour I came back and they told me sorry liquid damage warranty voided I would have to pay R1900.00 to repair my phone They don`t know that I am a repair tech my self , I went home and opened my phone to see where the liquid damage was and could not find any, They even showed me photo`s of "my device" with liquid damage Here a link to my YouTube Cannel :https://www.youtube.com/watch?v=n12ntsMJHRg