you knew the bollard when you drove in - forgot it was there and drove into it as you drove out of the car-parking space, instead of reversing out of the space. Carparks very often have small kerbs, stones or bollards separating the spaces - that's why in almost all supermarket or retail carparks i can think of, you drive in and reverse out (or the other way round). Completely your fault that your scraped your car, no amount of legislation or complaint will change that.
On your other post you said that the carpark was quiet so you "were aware that no small children" around - i'd prefer in future if you would make sure rather than assuming, and maybe that way you could avoid driving into bollards.