Website development

Website developed - time promised 3 weeks We are now going into the 7 th month and we cannot get any clear answers from them only excuses and they have renegaded on some of the functionality of the site requested, Besides being in breach of contract, they have misrepresented the company and the product that I have requested and are yet to deliver working site as per the specifics agreed upon We have paid the full invoice on nothing else but promises We have been cheated and my money has been stoles