Dear [Name],
I am writing to apologize for the incorrect naming of your [product/service]. I understand that this mistake has caused you a great deal of inconvenience and frustration, and I would like to take full responsibility for it.
I would like to explain what happened. The incorrect naming of your [product/service] was a result of an oversight on my part. I had not double-checked the name before submitting it to you, and I regret not doing so. I understand that this mistake has caused you a great deal of frustration and inconvenience, and I apologize for that.
I am truly sorry for the mistake and the inconvenience it has caused you. I understand that it is important to you that your [product/service] is named correctly, and I will do my best to make sure that this does not happen again. I have taken steps to ensure that all future submissions are double-checked for accuracy before being sent.
I understand that this mistake has caused you a great deal of frustration and inconvenience, and I apologize for that. I will do my best to make sure that this does not happen again.
Once again, I apologize for the incorrect naming of your [product/service]. I understand that this mistake has caused you a great deal of frustration and inconvenience, and I take full responsibility for it.
Sincerely,
[Your Name]