- Accusations of racism
- Dangerous driving
- Detours/no idea where they're going
- Being held hostage (took 4 very strong demands to be let out)
- Given a lecture because the driver couldn't find the address and told if you don't like the service to get out.
The grass isn't always greener
I have a bad experience maybe 10% of the time I take a rideshare, with taxis it's more like 75%. That does mean bad experiences will continue to happen either way, but I still favour the former and will pay more for it. Plus ridesharing still has the benefit of pooling, knowing costs up front, paying through cards without harassment, having the company keep a detailed record of your pickup/dropoff and route so reports of issues can be substantiated, quickly rescheduling if a driver fails to show (plus a map to see when a driver is not on route), etc. I think it's a clear win - at worst they share some of the problems taxis have, but taxis share none of the benefits that rideshares have.
We take taxis quite seriously in England. They are granted licences from the local government (the council). They are overseen by Licensing Officers.
I've only reported a taxi driver once (I can't recall exactly what for, but it wasn't anything too egregious), but it seemed like a swift and thorough investigation. They quicky summoned the driver to their office to explain himself and then gave me a report on the matter.
Customer input seemed to be taken quite seriously.
However, it seems the licensing framework does seem centred around drivers' criminal convictions, so the police would have to be involved in serious matters.