Et je m'disais... Peut être je pouvais m'énerver,

(title is a reference to this excellent sketch: Omar et Fred - Le Licenciement)

Our plaster & plaster panel worker just keeps on doing terrible work and being extremely unprofessional and unscrupulous and pretty much un-everything.

We have finally decided to take the necessary measures to break his contract (which I believe in France involves calling in a bailiff to have legal proof that the job has been badly done!).