You can report your card lost or stolen through this link online. https://www.turboprepaidcard.intuit.com/contact-us
You will need to create an account first. If you need a to find your card account number, look at the bottom of your 1040 tax return in the Refund section. This page will show you more about the Prepaid Visa.
https://ttlc.intuit.com/replies/6419975