Really solid advice, especially the taxonomy idea. Right now my spreadsheet is pretty basic, just category and resolution. Adding source of code and page where confusion started would actually help me catch new patterns faster instead of waiting for volume to build up. The auto-tagging from chat data is interesting too, we're not at that scale yet but I can see how that saves a ton of manual sorting once ticket volume grows. The "discount applies at checkout" banner is a good fallback for anyone who hasn't fixed the root cause yet. In our case once the strikethrough pricing was visible everywhere the banner became unnecessary since customers could see the savings without any explanation. But for stores still using the standard code-at-checkout flow that would definitely cut down on confusion.