You said it is on hold with customs? From where did you purchase that Apple Device? Apple and its authorized retailers will not ship an iPhone internationally. Please provide more information so we may try to help:
- What is in that shipment? An iPhone? iPad? Mac?
- From where did you purchase it?
- In which country are you expecting delivery?
- In what country was the purchase made?
We may be able to point you in the right direction for assistance. But if your device is being held up in Customs, there is nothing that we (apple users in this community forum) or Apple can do about that.