Toni Braxton is being sued by a promotions company who claims she ripped them off for Braxton Family Values ads...
A company called National Promotions & Advertising filed the lawsuit in L.A. County Superior Court, claiming it entered into an agreement last year with the producers of Braxton's WEtv reality show -- including Braxton herself -- to promote the show's 2nd Season.
According to the lawsuit, NPA agreed to post 4,300 "BFV" posters around the country in exchange for a fat paycheck -- $57,322.29.
NPA claims it completed its end of the bargain in November -- days before the premiere of the show's second season -- but Braxton and her producing partners didn't pony up.
NPA says it's been trying to get paid ever since ... in vain ... and now, it's suing for its money ... plus damages.
A rep for Toni tells us the singer is not involved in marketing budgets or payables for the series, and says such decisions are handled by WEtv.