What does it mean when you say the item is being built? Many items are made to order, what that means is that they are built after the order is placed. The normal time it takes to build this items is listed on their respective product pages. These are BUSINESS DAYS, that do not include weekends or holidays.
Why does my order have multiple tracking numbers? Many orders that have multiple items ordered, will have some items drop shipped from different locations. When there is different tracking numbers, they will be clearly assigned to the different items.