I'll start.
KLM Airlines, I understand you're short staffed and incredibly busy, so your customer service helpline has a long wait time. Therefore when you call you're directed back to the website. What I don't understand is your crap, verging on useless website. Following the links on it take you round in circles. And no, your helpline doesn't stay open until 8pm, as the voice message says, it shuts off at 7.