What color is the car ?
I dont know, my friend;
perhaps just use a very small pad and some polish or light compound and give it a little go with a Rotary at a slower speed, so you can control the progress easier, stop and see if its gone..
Perhaps something like Optimum Hyper Polish will work here... Its very quick at cleaning and correcting, and will keep on going until you decide to stop it. It finishes down beautifully as well..
Then, go back to those nitwits and see if they will reapply their "product" to that spot - or just put on something you already have that will probably do better than that junk which is going to be coming off at some point later anyway..
The paintwork will get dirty, scratched, etc., and later on, you will have to get it smooth again with either clay or a rubberized cloth like SM Arnold Speedy Surface Prep (Fine), and then its time to do it up better..
Sorry this had to happen - I see dozens of cars that have paint transfer more and more all the time..
Some of it is self-inflicted - most of it is from those those Drunk Driving Clowns that park by feel...
Good luck with this !
Dan F