Sorry to hear your part has snapped! Carbon fibre is incredibly strong for its weight, but it isn't indestructible and can crack or break under a hard enough impact. Breakage like this generally isn't a manufacturing fault, so it isn't covered under warranty.
The good news is that most parts can be replaced individually rather than buying a whole new item. We also have some discounts available for replacement parts depending on the purchase date. https://www.threeworlds.com.au/pages/fusion-carbon-fibre-staff-warranty-policy
Let us know which part broke (a photo helps) at life@threeworlds.com.au, or browse our small parts collection, and we'll help you get back up and spinning.