It all goes down to either an ML system making a decision, or a flag was added to your account by some other if-then-else rule. When I was inside Uber, I could escalate tickets, internally, but this is no longer an option.
I wrote a longer summary on why such banning happens [1] and why - sadly - as a customer, we cannot do anything about it, until Big Tech prioritizes sorting out these edge cases, or there's regulation passed for them to do so.
And if you think Lyft is better: The New York Times ran an article Help! I Was Banned From Lyft and No One Will Tell Me Why [2] where they heavily quoted everything I wrote about why Uber - and Big Tech customer support, in general - works like they do. Lyft is pretty much the same.
[1] https://blog.pragmaticengineer.com/scaling-customer-support/
[2] https://www.nytimes.com/2022/11/17/travel/tripped-up-banned-...