They couldn`t wait for the towing vehicle coz
I would take the unauthorized parking ticket and sue the town.Now in that scenario it will cost way more to get the car out and for the damage to the car.
?It seems they are stones of some kind so cement mixture is required not concrete and yes cement has to be used quicker than concrete.I wonder how long does it take for the tow to come ?Certainly not hours in Lodz.I think there is some clash/ personal thingy involved.Something is fishy I can bet.