The charge is either because you have recently purchased a product from one of the thousands of Software and SaaS companies Avangate works with, or because you have subscribed to receive renewals or new versions of their software or services and be billed according to the subscription plan you agreed to at the time of the initial order. After making the online purchase, you should have received a receipt by email from Avangate.
More information: http://www.avangate.com/shopper-support/