Made to feel like a fellon by Market Toyota Retreat

I was totally and utterly disappointed with the treatment of my wife during my car being serviced today. When my wife dropped the car at 07h15 in the morning she was promised that the car will be ready at 13h30. She arrived early and was kept waiting until 16h00 and then to add insult to injury despite me paying the via EFT from my Absa bank they would not release the car. I have sent through two screen shots from my internet banking application as evidence they still would not release the car. I have been a customer there for the last 5 years and have had my car serviced as per the service service book. Despite conversing with the supposed service manager to explain the situation they ended up having to drop my family home while they keep the car. I am disgusted and annoyed that they have treated my wife like a ******** and caused her and my daughter distress especially as she offered to leave her personal credit card as collateral. I will never darken this organizations door again and they must never phone me wanting me to trade in my car as it will never happen. In addition will they phone me and apologize to me and my wife tomorrow when they confirm that the transfer was made as I have indicated today. Somehow this team in the service department lack the maturity and backbone to admit that this withholding of my vehicle was unnecessary and caused undue stress to my wife and daughter.