Advised that people dont get cars serviced there

Barloworld Toyota Menlyn Pretoria. I sent a mail to toyota for a booking twice for a quote after 3 weeks I called them reception said they will relay the message, a week later I called again and had to say that I personally want to talk to a person to book in my car, after almost 4 weeks I got hold of someone to send me a quote. This never happend so I called again week no 5 I finaly got a quote. Then to book in the car was another argument. Finaly week no 5 got a booking and was told if im there at 6am it will be done first. I got there first in line for a service, booked the car in and was told they will call me as soon as it was ready, they called my husband awake who works night shift on the other number that i asked not to call, so he had to call me to tell me the car was finnished, when i got there 40 min later the car was still in service bay? Drove out and my fanbelt started screeching, I askes them to please make sure it was tightened when I dropped off the car, they had my car over 4 hours and got it back dirty still. Everytime I service my car it seems they check the air box at a cost of 500+ just to look at it but they cant be bothered to fix a simple thing like a fan belt, now I need to re service my car and make sure they actually did do anything they said as you cant trust a garage that lies to customers.