If you requested to have the refund put on a prepaid debit card, you need to call the processing bank to see if they will accept a change request.  Likely they will agree to mail a check to the address on the tax return, they may not agree to change the deposit bank (to prevent from getting tricked into diverting people's refunds to scammers).  If you also agreed to have Turbotax fees deducted from the refund, that service charge will still apply.

You can contact Santa Barbara Bank & Trust (SBBT) customer service at 877-908-7228 or visit their website www.sbtpg.com