PSA: For anyone that had any items cancelled, PUTPAC! They are allowing you to replace the item with a similar priced item, and still honoring the 75% off.
The rep mentioned to me that it was an employee promo code that leaked, and that they received over 60,000 orders between Black Friday and the following Monday, and the system was therefore not always up to date. So many items were actually out of stock, they therefore are allowing you to replace any cancelled items.