EFS and Fleet One | Contact Customer Service | WEX Inc.
EFS and Fleet One Customer Service. 888-824-7378; T-Card/T-Chek Customer Service. 800-776-2433; Order EFS Checks. 888-824-7378; Merchant Services. 888-824-7378; Factoring. 877-275-8801; Office locations. Portland Office. 1 Hancock Street; Portland, ME USA 04101. Nashville Office. 4031 Aspen Grove Drive
