Traumatic Experience. What is the point of advertising??

In March last year, while looking for transport to the Ed Sheeran concert, I saw a PPS car driving by and took a photo of the advertising in order to contact them for a quote. The driver saw my flash and started waving his hands and getting angry at me. He proceeded to follow me while taking photos of me, until I started trying to lose him. I contacted a security company to follow me home as he managed to find me later on. Eventually I managed to lose him for good. I called PPS and the Fleet Manager promised to follow up and track the route the driver took to prove it. I kept calling for weeks only to be told they are following up or getting back to me. I am still traumatised from the experience hence the delayed review. I still can not understand the actions of the disgraceful driver or the appalling service and poor attempt and an apology from the company.