I apologize that your text is slow. I have a very busy with work that I need to do each day, and I've told you previously, I tend not to read the email.
Sorry to respond to your message shortly. I'm really busy with work There are many things I have to do each day. And I've told you before, I always have to read my email.
Sorry to reply to your message in late, I was busy with work, really, there are so many things I need to do in the day. And I have told you before that I don't usually get to read the email.