I am writing to apologize for my exasperation during our conversation the other day. I understand that I was out of line and that my behavior was unacceptable.
I know that I was frustrated with the situation, but I should have handled it in a better way. I should have taken a deep breath and tried to remain calm instead of lashing out at you. I am sorry for my outburst and for the hurtful words I said.
I understand that it must have been difficult for you to deal with my frustration and I apologize for making you feel uncomfortable. I should have been more understanding and patient with you.
I hope that you can forgive me for my behavior and that we can move forward from this. I will do my best to be more mindful of my emotions and to handle them in a more appropriate manner.
I am sorry for my lack of self-control and for the way I acted. I hope that you can forgive me and that we can continue our conversation in a more positive way.