Revibe South Africa threatening to destroy my phone while ignoring my warranty appeal!

I sent my device to Revibe for a warranty repair using THEIR arranged courier. The phone was securely packed in bubble wrap and completely undamaged when it left my hands. Revibe then claimed the phone had an "invalid claim" due to a "hitting sign" on the screen and demanded R1,700 just to ship my unrepaired phone back to me.I immediately sent a formal appeal email with clear photographic evidence proving the phone was perfect before transit, meaning any damage happened under their courier's care. Revibe has completely ignored my emails, and now they have sent an automated threat stating they will consider my device "abandoned" and DESTROY/DISPOSE of it in 6 days! This is highly ********* and ******* under South African consumer law. You cannot hold my private property hostage, ignore my dispute, and then threaten to destroy it. I demand a senior manager review my case, check my pre-shipping photos, freeze the 6-day destruction countdown, and repair my device under warranty. Order number: [ZA-22993].