Did you have the Turbo Prepaid Visa card? If so, click on the blue link in the FAQ below that reads 'Log in to your account' to access your prepaid card account.
Here is a TurboTax FAQ with info about the Turbo Prepaid Visa card. There is a link 'Log in to your account' you can click to access the website for the bank:
I need my 16 digit card number that's associated with my old green dot bank account number [phone number removed] please n thank you
Unfortunately, we are unable to assist with the Turbo Visa Debit Card in this forum. You will need to call customer service. The correct number is listed on the Contact us page.