[Kikibosum]

We have examined your complaint and made all the necessary verifications. Unfortunately, we cannot offer you a refund at this time because the carrier has confirmed that the package was successfully delivered and received at the delivery address indicated.

What are they on about?

As per below, Isn't It clear that the carrier has no Idea on the whereabouts of the package?

So I contacted the carrier
They sent me this email:
Despite all our efforts, we have not been able to locate this package.

Yes, absolutely. They refuse to give me any more information. The response time speaks for itself, 4 minutes to analyze a document and make a decision is very fast.