Questions about purchases made through Ravelry should be directed to Ravelry. Often you will find your downloads in your Ravelry library or links to your purchase in your email (be sure to check your spam folder, too, just in case.
If you made a purchase and can't find it in your Ravelry library, they do have a helpful tool to track down your order.
Please visit the Ravelry FAQ regarding finding a missing pattern here: https://www.ravelry.com/faqs/17487