Try to cancel the transaction immediately if you accidentally sent money to the wrong email address or mobile phone.  To cancel a “Send Money” transaction on GreenDot.com, go to your Transaction History, click Cancel then Confirm.  To cancel a transaction on the Green Dot app, go to the “Pay” tab. Click Send Money, then Past Payments.  You’ll now see pending transactions. Select which one you’d like to cancel.  Unfortunately, the transaction can’t be canceled if the wrong recipient already claimed the money. Try working directly with that individual to retrieve your funds. Before sending money, always confirm the recipient’s information. Green Dot is not responsible if you send money to the wrong individual.