Have you asked where it is? So many times in France I have been huffing and puffing about something that I would expect to have been told - only to find that it had been done/sent/prepared but nobody said so!
The dossier of diagnostics may well be sitting on the notaire’s desk….
(2 examples from yesterday….had phoned local firm to arrange for a shutter repair, to be told by secretary “he will phone you”. No sign for days so popped into shop yesterday. Same secretary “oh he’s off sick and no idea when he’ll be back”.
Then had asked for a medical certificate from health centre…”we’ll phone you when doctor has signed it”. Popped in there too and it was waiting for me, dated over a week ago! )