Baby trolleys not allowed outside checkers

Now I went shopping with my baby and obviously going for a trolley that will make my shopping more easier. To my surprise, after paying, am told i cant take the trolley with the baby seat on outside the checkers shop. I ask why, and I am told because you people ***** the seats from the trolleys. I ask which people exactly? You mothers, was the answer. I am like, then why do you have those people outside in red overalls working for you as trolley pushers? How can I be driving alone with my baby and not have a car seat? This is an insult because if mothers wanted to ***** seat from trolleys, they could have done so with the Pick n Pay trolleys a long time ago before Checkers was opened in Modimolle. Really now!!!