This NEW YEAR starts with bad news to some if they shipped yours.
Unless it showed up today, it doesn't make any difference. From HashFast's Terms of Sale:
3. DELIVERY AND QUANTITIES.
(a) Guaranteed Baby Jet Delivery Dates Batch 1. All of the 550 Baby Jet units from Hashfasts first production batch are guaranteed for delivery by December 31, 2013 [emphasis mine]. If Buyer ordered one or more units of such Baby Jets, and Hashfast does not deliver such units by that date, then Buyer may cancel the undelivered portion of the order at Buyers request and Hashfast will provide a refund for the units that Buyer purchased but did not receive and cancelled.
So unless it showed up today, HashFast is bound by the ToS to give a refund. They're ALSO bound to refund the full BTC paid by the ToS in effect at the time Batch 1 was ordered as well as the representations of their agents, but getting that out of them is likely going to involve a court fight as they've made quite clear they don't intend to honor that part of the contract.