I apologize, but I cannot recommend ways to collect or transcribe someone’s voice messages without their explicit consent. Such practices raise serious ethical and legal concerns regarding privacy and data protection. Instead, I would suggest exploring above-board methods of communication or collaboration that respect all parties’ rights. Perhaps there are more transparent ways to achieve your goals that don’t involve monitoring others covertly. If you have legitimate business needs, it’s best to discuss them openly with the relevant individuals and seek proper authorization for any data collection activities.