Aside, I reviewed the Insider Program Terms & Conditions (sorry again, can't link) and after saying:
..it goes on and on at great length to spell out that Microsoft is not liable for any issues that might arise from the use of the previews, and says users can't sue Microsoft or take part in any class action litigation, only individual arbitration. Interestingly though, it only applies if you live in the USA (or if that's your principle place of business). I live in Canada! Ha!
If my phone is not working by Friday, I will request a replacement phone from Microsoft.