I wish people would stop saying people "always" have fees waived. It's absoloutely not true.
I had a personal project, where I wanted to occasionally do short but highly parallel jobs. Once my scripts didn't close everything down correctly and a week later I had spent £600. That's a lot of money to me personally. I asked politely and it was never refunded.
We also asked them to summarize what happened so we can think how to help other users not to make the same mistake in future.