Looking for AutoDesk products Subscribers

Hi there, We are a market research firm and we need to learn about how Autodesk manages its customers, and we do this by looking at a large number of subscriber invoices. If you are interested in participating in our research project, please reply with the following: 1. How long have you been a Autodesk paid subscriber (i.e. Your very first invoice date and total number of invoices you have) and, 2. On what date are you billed monthly If you match our criteria, we will invite you to share with us two of your latest invoices for verification (we will pay for it). Post verification we may invite you to share with us the rest of your invoices and send you a quote for you total payout. This is an anonymous study and we encourage you to remove your personal details such as Name and address.