Ukrposhta 66800

I sent a parcel with cash on delivery to this department. Three weeks have passed since the subscriber received the parcel, there is no money, there is no information about the delivery of the parcel either, according to the pretense of the result, there is no positive, disappeared into thin air! Are we living in the Stone Age? And the number of the invoice is not different in the database, I didn’t come up with this parcel, parcel? I'm shocked! Return my money!