Irresponsible and Reckless driving

We travelled behind a City to City bus for approximately 50km on the N6 from Jamestown to Queenstown (Komani). The driver drove recklessly, overtaking other coaches and buses on double white lines, blind corners and blind rises. This happened about 7 times on the 50km stretch of road. Other vehicles (those being overtaken and oncoming ) had to swerve out to avoid an accident. He was averaging 120km per hour. He went down Penhoek pass at approx 100km per hour. The report bad driving number couldnt help us as they no longer subscribe to it. Not one of the two numbers written on the back of the bus is operational nor are all the numbers for different cities on the internet operational/being answered. You cannot contact them via their website either. The drivers seem to know that they can get away with reckless behaviour. The bus/coach number was 4909H. This happened between 7am and 8am on 22/12/22. The chances of them responding to this or taking the complaint seriously is almost zero. This is just a warning to rather avoid using them.