(1) In the absence of a special agreement, a mandatary may not demand remuneration from the mandator.
(2) Where it was agreed that a mandatary is to receive remuneration, he may not demand it until the entrusted affairs have been completely performed; provided, if the remuneration has been fixed by periods, he may demand it after the expiration of the period.
(3) If a mandate terminates in the course of performance of the entrusted affairs by the mandatary due to any cause not attributable to the mandatary, he or she is entitled to remuneration in proportion to the affairs already managed by him or her.