KINGS WINDOWS

We had a back patio door and all windows done about 5 years ago by Kings from recommendation. We found the back door always has a problem. It's a bit stiff and all the aluminium panels inside the double glaze came off. Thought my husband has rang Kings talked about it couple times but nothing was actually done. Therefore we have to live with it. Then 2 years ago, two of the back windows on upstairs and downstairs could not open. We rang Kings again and the lady on the phone said the engineer will ring us when he's nearby to have a look but no one ever called. Therefore my father in law came and fixed it. Recently the patio door was stuck locked, we guess it must have been dropped bit by bit in the past as it's always stiff. The in law came to look couldn't fix it, therefore we had to ring an emergency locksmith which cost us about £190 to fix the door. He said the work on the back door that has been done is awful and it must be from cowboy builders. The door has been dropped over 5 mm and he found only one screw put to hold the door to the wall and it's not even the right screw fit in. We can't even imagine what had been done to the rest of the house. We are now very frustrated and in process to fix the rest of the problem with those windows and door.