Turn in your I-94 Departure Record and documentation that you left the United States to: (for UPS/Fedex)
Coleman Data Solutions3043 Sanitarium Road Suite 2Akron, OH 44312
DHS - CBP SBU
Do not mail this documentation to any U.S. Consulate or U.S. Embassy or any other U.S. office. Only the address above will be able to make the necessary corrections to CBP records and prevent any future issues for you.