Complain about the Delta couches service

On the 25th of this month we were travelling from Cape town to Johannesburg. The service was pathetic. The bus arrived 3 hours late without any notifications. On the way bus stopped because of diesel. The driver had to ask the owner to transfer money for the diesel. It was raining and we got wet in the bus because it was leaking. That bus was not in good condition,the tyres were worn out and the bumper was damaged. It's also not user friendly for people with challenges. The steps are to high to get into the bus. We travelled for 24 hours from Cape town to Johannesburg. That bus has to be removed because it's not worth for passengers or even animals. It's a grave bus.