What is fsa phone number? The Customer Service Phone Number of FSA is: 1-877-372-3337. FSA of Flexible Spending Account is a tax advantaged program which is offered by the US Federal Government.What is the phone number for federal student loans? Student Loans Customer Service Phone Number. Phone Number of Student Loans is 1-319-337-5665 / 1-800-557-7394 / 1-800-433-3243 . Student loans are the financial support given by the United States government to the students to pay their education fee.What is telephone number for fafsa? The customer support phone number of Fafsa is 1-800-433-3243 / 1-800-730-8913 / 1-609-771-7725 (Click phone number to call). The postal and official address, email address and phone number (helpline) of Fafsa Service Center and Fafsa customer care number is given below.What does my fafsa efc number mean? EFC stands for Expected Family Contribution. The EFC code number you receive after you complete a FAFSA (Free Application for Financial Aid) is the amount your family is expected to contribute for one year (the school year to which the FAFSA applies).