Check taxi driver and vehicle legitimacy.
How to file a complaint regarding the condition, roadworthiness and cleanliness of the vehicle, the conduct, behaviour and identification of an SPSV driver, overcharging and other matters relating to fares, the hiring and booking of the SPSV, identification and general appearance of the SPSV. Also complaints against a taxi or a limo company.
An Garda Síochána is responsible for lost property handed in by SPSV operators. An Garda Síochána is also the authority able to trace, and/or contact the driver on your behalf. If you lost your phone, wallet, or any other valuables in a taxi, you can follow the advice in this post.