I am so sorry that I appear to have shipped a wrong item to you. I am going to send you the correct item right away. Please wait for a week or so. You may keep the wrong item delivered to you.
We are terribly sorry for that we have sent you a wrong item. We will send you the right item right away, so would you wait for it for a week or so. Please keep the item on your hand.
I am very sorry. I’m afraid we have sent a wrong item to you. We will ship out the correct one to you as soon as possible. Please allow a week or so for the arrival. The incorrect item currently in your hand is yours.