Aluminium windows

Extremely poor wormanship Does not finish his jobs. Always makes excuses. Installed wrong aluminum window systems. Installed tripple sliders on double slider system. All windows and doors are leaking. Have not replaced the broken glass that they broke as promised. Some toilet windows are the wrong glass. Rubber seals and strips are missing from the windows. He used nails on some of the frames that has started to rust. No stoppers have been installed on the windows or doors. He issued the Glazing Certificate without being finished.