Key legal question
Whether the cantonal court arbitrarily found the defendant to be C.'s contractual partner and accepted C.'s version of the agreement
Extracted holding
The cantonal court had in fact found that the defendant was C.'s contractual partner; leaving open whether the wife was also involved was immaterial.
Extracted reasoning
The Supreme Court held that the lower court gave coherent, non-arbitrary reasons for crediting C.'s account and rejecting the defendant's version.