I received debit cards in the mail saying it was my Oklahoma tax refund. However, I chose to have my taxes directly deposited into my account. What are these cards?

Please reach out to your State's department of revenue.  TurboTax has no control as to how your STATE manages individual refunds.  Look on your State tax return for additional information that should help you better investigate the cards you have received.  I hope this helps.  Have a great day.