@Canaan Online Shop, I'm glad to see that you're taking a stand and refusing to cave in. I have been in these situations myself and know how important it is to remain calm, professional, and to not be intimidated by threats. If you are in contact with a real customer, try to get a signed message from the original address. That would be definitive proof that the scammer is lying and that it is safe to return the funds to that address.
Precisely, we agree to return risky BTC to real customers, not scammers without any evidence we can trust. Luckily, we didn't refund immediately to this scammer, even though he freaked us out and even abused us verbally. We only refund real customers who passed KYC and can show us the order page without any excuse.
scammers pretends to be our real customers and PM our admins. Meanwhile, scammers copied our admins' names and profile pictures in order to chat with real customers. That's why scammers have some chat history with our admins and collect some proof from our real customers, such as payment receipts and models, as well as email addresses...