The best restaurants serving Argentinean food in Croydon London

My friend ordered a medium rare steak and it turned out to be blue and we know our steak, and when returned they tried telling us it was medium rare when it was basically mooing at us. My chicken arrived and I bit into it and I’ve never felt so sick, it was still clucking at me. Asked multiple people around me if it was raw and they all agreed it was. I took it back to ask for a refund and the lady there started getting really offended and ripping it apart saying it wasn’t raw when there was clearly raw meat and bones in it. A nice security guard came over and also redeemed it was raw and enforced a refund as well as the manager of box park. Absolutely disgusted, never returning here.