Answer:
Apologize and come up with a new plan. Of course, you need to apologize, if you don't then that becomes a problem. (especially if they are a Karen.) After apologizing start to explain what you are going to do about it. For Example Refunds, Store Credit, Replacement, Etc. To start off. Then fix the problem. Also, tell them that you are going to do so and so to fix it. Like creating anew toy or whatnot. Hope this helps!
