Unpaid invoice

Bad service ever. I supp**** News Cafe Hatfield with Barmen for their events on the 31st August 2019. I only received 1/3 of the total amount. News Cafe management are now ignoring me or lying every time and I have unhappy staff now I have been speaking to Prinesh for almost a month. The only thing I got was empty promises. Now I am even scared to do any business or even visit the restaurant