Toyota - Sunninghill Park Complaints

I share the below sentiments I saw on Hello Peter about Toyota Rivonia/Sunninghill.
"Rivonia Toyota - myself and PLENTY other customers are unhappy with your shoddy workmanship, taking chances on peoples' vehicles but most of all on their lives as they drive these vehicles. Maybe a shutdown/new management/investigation, alternatively a complete overhaul, as no-one should be held ransom by dishonest people."
My story:
I took a perfectly functioning car in for service and in less than two weeks after the service the car broke down in the middle of the highway-risking my life and that of others on the highway. I have always prided myself with having a reliable car but since taking it to Toyota Sunninghill that has since changed. Mind you, when I think back, this is not the first time I have taken a perfectly functioning car in for service with them and they break it. This time after I received the car from service I felt that something was different (in a horrible way) about the car. It felt like something was missing. I immediately took it back to complain and they told me I couldn’t complain as they close at 5pm. I was told to drive home with the discomfort and come back the next day which I did. The following day when I was there to complain I was told the guy to complain to is not available. The complaints logging process is extremely frustrating /they make it difficult to complain about bad service.
I forgot to mention that after the service I was also told that the brakes and clutch needed to be replaced. They quoted me a huge amount as well. They are a bunch of scammers according to me! I would not advise anyone who is serious about the lives to take their car to Toyota Rivonia/Sunninghill for service.