IBM had quite a good free tier on their Bluemix platform (which got ingested by Cloud), but in the end it was discontinued. A few years later I started getting

IBM had quite a good free tier on their Bluemix platform (which got ingested by Cloud), but in the end it was discontinued. A few years later I started getting bills for predicted server costs (which actually were never incurred) arriving at my parents' home that I had given as a sign-up address, but wasn't able to log into my account to close it altogether having altogether forgotten about my account, let alone the login details. And it was using my university email address anyway which of course I had no access to. In the end I pestered someone in the company enough that they just went in and closed the account for me.