That was my thinking charley, but it's beyond a joke now, nearly three months. Desperation is creeping in. Can do very little, balance is haywire, constant headache and worse brain fog than usual. No nasty coughing up but I am very breathless, see what a couple more days brings. Yes, flu jab was jabbed, Will stop moaning, promise 
When we bought a house years back the kitchen doors had a sticker inside with the name of the manufacturer who was prepared to send some to our local friendly builder. Actually a neighbour, but he was also a builder. Doesn't sound so simple for you if your installer has a monopoly. Can imagine the frustration. You seem remarkably patient. Builders and dust management just don't seem to go together. The only one I know who was oh so careful was our previous neighbour, our experiences here have been dreadful.
Your re-decoration sounds very stylish, n&g, you have certainly worked very hard to present your home to potential buyers. As charley said, if you stay put for a while lots for you to enjoy.