If you have ordered items from abroad and are wondering where your package is, you must contact the shipping agent.
In the case of online shopping there is a shipping agent, for example Posten, who transports your items. Norwegian Customs neither transports nor stores shipments.
If you don't know who is transporting your shipment, you must enquire with the seller.
If you are told that the shipment is being customs processed, this does not entail that Norwegian Customs is in possession of the shipment. It is the shipping agent who handles practical matters concerning customs clearance and who will know where your shipment is.