If you suspect that someone is using your social security number, you need to report to the Social Security Office at 800-269-0271, 800-772-1213 or www.oig.hotline@ssa.gov.You can order your Earnings and Benefits Statement at 800-772-1213. You should continue to follow up on your investigation on a regular basis. If the Social Security Office decides that there is someone else using your social security number, you can report this information to the Internal Revenue Service Criminal Investigation Unit at 800-829-0433; www.treas.gov/irs/ci.