The package appears delivered: But that's not true!

I think I was scammed with a clearly fake tracking code.

In practice, by entering the code on Cainiao I see that the code has been constantly updated, but the nonsense thing is that it appears to have been delivered on Sunday to a store... but this is closed and is not accessible as well as there is no one nearby.

I contacted the local post office who denied that the package is in the country, in fact they claim that it is a fake tracking because it has never entered their systems.

Now the seller claims that it has been delivered so get by...

What can I do?