Don't trust Chata Tech or Discovery Insure

We had storm damage and my son's desktop pc which is in daily use was damaged by rain. Chata Tech was sent by Discovery Insurance to collect pc box. It was all in good working order and acccording to Chata Tech is has failed working due to wear and tear and being old. We insisted pc box be returned and received it back today in shocking condition. So much damage done by Chata Tech and they just claim that is how they received it. But we have photos of condition of pc box when it was handed to their technician. Absolutely shocking that good working things are returned in such a state