Mont. Code Ann. § 28-10-303
28-10-303 Duty of agent employed to collect negotiable instrument
28-10-303 . Duty of agent employed to collect negotiable instrument. An agent employed to collect a negotiable instrument must collect it promptly and take all measures necessary to charge the parties thereto in case of its dishonor and, if it is a bill of exchange, present it for acceptance with reasonable diligence.