Not good

We have the worst tradesman in our city!
Last year he spent more than three months upgrading our ensuite and fixing a leak under a window. The window is now squeaking in heavy wind and the shower wall was never straight. The tradesman promised to replace the shower wall for us but it took until two weeks ago for him to arrive to do the work. Sadly, on day one he didn't know how to remove the tap so he went away for a week to get some advice. He returned a week later, removed the tap and then discovered the replacement shower wall he purchased is too short. It was everyones fault but not his. We are now waiting five to eight working days for him to get another shower delivered.
What will go wrong when he returns?
We are very lucky to have another shower to use while we wait.

Guess which tradesman will not get anymore work from us.