Was a customer of fictitious business name. Fictitious business name shows two individual owners in Department of State records. Corporation is not listed as an owner and in same line of business as fictitious business. Fictitious business never mentioned they were DBA corporation on any receipts or paper work. Corporation and fictitious business have two separate locations and appear as two separate entities. Corporation claims to be corporate office of fictitious business name, but doesn't include fictitious business name/address on any company letterhead or Web site which lists other corporation locations. Addresses registered with Department of State are different as well. What legal standing does corporation have and shouldn't listed owners of fictitious business name be suing?