" I just returned home today after an emergency that kept me longer than I anticipated and I want to ... " (more) say that I am incredibly sorry for putting you in this situation. Please forgive me as I should have responded to you in a timely manner but my situation did not permit me to do so."
"I did not say that I sent it out. I just returned home today after an emergency that kept me longe ... " (more)r than I even anticipated and I fully apologize whole heartily. Would you still like the item?"