Dear [Name],
I am writing to apologize for my behavior during our recent interaction. It was unprofessional and inappropriate, and I regret my actions.
I understand that my words and actions were hurtful and offensive, and I apologize for any pain or discomfort that I may have caused. I take full responsibility for my actions and want to make it clear that I am truly sorry.
I understand that my behavior was unacceptable and that it reflects poorly on me and my company. I want to assure you that I am taking steps to ensure that this kind of behavior does not occur in the future. I am committed to learning from this experience and to being a better professional.
I realize that my apology cannot undo the hurt that I have caused. I hope that you can find it in your heart to forgive me and to accept my apology. I am open to discussing this further and to finding a way to make amends.
Once again, I apologize for my behavior and the pain that it has caused. I value our relationship and hope that we can move past this incident.
Sincerely,
[Your Name]