Useless bunch of agents

This company says that one of my accounts is handed over and each time they send an email I respond, tey they will get someone else to email me,I have received emailed from 8 different people each time I advise them that I have an arrangement in place with the company in question I even sent the updated statement then the next day I get an email from another agent. I will not make any payment arrangements with you I dont have a contract with you and I am tired of responding to different agents who dont seem to know what is happening. Please follow up with the company as I will ignore all emails as of today.