Edenvale branch damaged the tyres of my brand new car

I went to the Edenvale to remove a nail from my 2 month old car. I don't know much about cars but I drove a car back home that rattled, was unstable and did not handle well when I app**** the breaks. I found out from another branch that they did not balance the tyre before putting it back on my car. They also filled my other tyres with drastically random pressure. I would NEVER take my car back there.