A senior citizen was bilked out of $4,000 Tuesday when a man claiming to be an Internal Revenue Service agent conned her into buying several Apple iTunes cards and giving him the card numbers. The woman’s husband began calling her early Monday morning but was unable to reach her. Worried, he contacted the Bulloch County Sheriff’s Office, and investigators found that her credit card had been used Tuesday at Statesboro’s Wal-Mart Supercenter for a $2,000 purchase and again at a nearby Walgreen’s for $2,000, according to Bulloch County Sheriff’s incident reports by Investigator Dustin Williams.