What’s Been Your Worst Customer Service Experience?

I have two contenders. One was when I ordered three glass nesting tables (I was off my meds) and FedEx delivered 93 pounds of glass smithereens to my front porch. It took a three-week concerted email and phone campaign before they came back and took it away. The other was at Walmart. I left a bag of purchases there (for my husband's birthday) and when I went back the woman in customer service wanted to know not only what was IN the bag, but the titles of the books and what was written inside the cards. I think she was off her meds too.