I got into a cab ride in Hong Kong, which ended with the driver adding some silly surcharge (145 HKD). I wanted to report the taxi driver but the car had no plate and the driver's name was not displayed in the car. How should have I reported them? (e.g. am I allowed to hold the taxi driver while waiting for the police to arrive? Does the taxi contain any other identifiable information? Is taking a video/photo of the driver enough? etc.)
The receipt didn't have any useful information either (and was given to me as shown in the image below, with the top being missing):
The official website to report issues with taxi drivers in Hong Kong asks for either the taxi driver's name or plate: https://www.tcu.gov.hk/taxi/index.htm