The African-American mom who was refused a table at a Baltimore restaurant says she's taking the joint to court, because its apology's coming up short. Marcia Grant and her 9-year-old son, Dallas, came on 'TMZ Live' Tuesday to announce a forthcoming lawsuit against Atlas Restaurant Group -- the company that controls Ouzo Bay, which discriminated against them over a dress code that wasn't evenly applied ... based on Marcia's video.