Poor quality workmanship

My daughter was taking our truck to Johannesburg so we took the truck to Tonnesen Fitment Centre, Rosmead Avenue to have all the tyres checked. They were told the the vehicle will be driven to JHB and were asked to thoroughly check the tyres. They advised that two had to be replaced and that they would put the bet tyre as a spare. They were also paid to balance and align the wheels. Just outside Bloemfontein a tyre bust causing the vehicle to veer across the oncoming traffic and into an embankment. The tyre that Tonnesen's left on the vehicle was very old and the spare tyre they put back had a nail in it. This was al confirmed by the company in Bloemfontein. As a result my daughter had to stay over in Bloemfontein and have the vehicle checked a it had hit an embankment. When I complained to Tonnesens about the problem they were not at all interested in hearing about the incident.