This problem can have several reasons:
1. Order wasn't shipped yet. Did you receive a confirmation e-mail about the shipment?
2. Order is on the way – please check the tracking link (in the confirmation e-mail). Once the package enters your country, it can be usually tracked with your local postal system (USPS in USA for example). Great tool for tracking packages is 17track.net/en.
3. If the package seems to be "on hold", it usually means the postal courier wasn't able to reach you at your address. This usually mean the package is held up at your local post office – please call or visit them for more info.
Your local post office is always the best source on information about the package delivery. They have the most recent info, and very often they hold your package. It usually gets stored for 1-2 weeks and then it is sent back to us. Please contact them as soon as your package is not delivered in time.