tried to dispute a credit card bill, but they'd replaced the customer service with an AI chatbot that couldn't understand "My bill is wrong" no matter how I phrased it, so instead of helping me, it just kept thanking me, saying my futile attempts to get my money back were "helping me to learn"
FWIW last time I spoke to a human at the credit card company about a 100% and clearly incorrect billing from a large chain (power failure, they repeated the same charge twice) they flatly told me nothing they could do; thankfully the chain actually followed up an email & credited me