English composition about apology letter?

Please accept my sincere apology, because I added an extra visit without your permission, which caused you inconvenience.

I have no intention of interfering in your private life. In China, it is a common way to welcome tourists by arranging interesting leisure activities. However, as your receptionist, I should be aware that you tend to regard your private time as an inviolable treasure and hate being harassed by unplanned things.

I'm sorry I didn't discuss with you before making such unreasonable arrangements. I can only say that it won't happen again.

sincerely

lily