If you werent willing to pay for an SLA, and they clearly werent going to offer one to you… why is it surprising if literally no promises were made in writing?
Why would they intentionally lose money on your private commercial activity without even that?
I'm calling out your "questions" as containing a bunch of unsupported claims about the situation on top of weird assumptions about how things have to work. It was not an answer, and your questions as written don't deserve answers.
How many services have meaningful SLAs for extreme downtime?
Github and (parts of) AWS will give you a small discount at 0.1% downtime, a bigger discount at 1% downtime, and AWS will refund the whole month for 5% downtime. But beyond that they don't care. If a particular customer gets no service at all then their entire $0 gets refunded and that's it.