First, here's to stop your Advantage membership (annual subscription):
https://ttlc.intuit.com/questions/1901052-how-do-i-cancel-my-turbotax-advantage-subscription
And here's an online refund request form. Submit it within 60 days of having received your product.
https://support.turbotax.intuit.com/forms/refund-request.jsp
If you have any problems with the refund form, here's how to reach TurboTax Support by phone:
If you are an Advantage member, log into your Advantage account and scroll down past the FAQ links. Near the bottom of the page you should find a special Advantage phone number to directly contact Customer Support.
If you are not an Advantage member, use the form at the link below to schedule a call back, or it may provide a number.
https://support.turbotax.intuit.com/contact
