Questione giuridica chiave
Whether the cantonal commission arbitrarily found that the 26 January 1998 letter was only a request for an advance payment and not an intermediate fee statement binding the lawyer.
Decisione estratta
The factual finding was arbitrarily incomplete because later letters showed the lawyer himself described the 26 January 1998 request as an intermediate situation statement.
Motivazione estratta
The commission ignored relevant later correspondence from 17 March and 31 May 1999, which expressly referred to a 'situation intermédiaire' and a 'solde d'honoraires'. That omission rendered the evidentiary assessment unsustainable and arbitrary in result.