Two people have complained in the past year that taxi drivers refused to take passengers by falsely claiming their car batteries were flat.
The incidents are among 147 complaints released to the Herald on Sunday under the Official Information Act. The complaints were lodged with the New Zealand Transport Agency in the year to April 18.
The most serious cases included one of sexual harassment and 11 of unacceptable and intimidating behaviour.
There were another 16 complaints of filthy language or verbal abuse, and one person said a taxi driver tried to charge them $200 for soiling a vehicle.
Other common concerns included failing to reach a destination on time (19), poor English (11), refusing service (9) and poor driving, such as running red lights (8).