But there are a few cases of return:

1, the customer does not refuse to cooperate with the customs clearance, resulting in the clearance of the customs, more than a certain period of time will be forced to return

2, the recipient is not willing to pay the tariffs (nowadays, DHL may charge tariffs directly to the sender)

3, the country of destination can not import this kind of goods

The situation you described can actually be avoided, if the recipient is not in, DHL will contact by phone, the recipient will negotiate with DHL when to send the goods, unless you give the phone is a landline, the recipient did not pick up the phone to hear it