Bad boys bad boy, what u gona do when they come for u!

Finally today i took Zaid to Chuck cheese cus i promised him days ago..he has been writing from the Arabic story and we are still memorizing Quran:))

I took him after school, the place was nice and not crowded and i was waiting for my friend and her kids to join...the kids are running n playing..etc

All of the sudden Zaid comes very upset and was fighting the tears in his eyes!! I asked him what happened!! and he said "the lady hit me in my head"!! i was shocked!! i asked him to show me the lady and he points to one lady sitting on a table..i go and sake her nicely "excuse me did you hit my son?". She said excuse me!! your son was hitting my nephew and she started giving me this trashy attitude moving her head and hand in my face....etc i told her "i asked you a qustion you don't need to talk like that!!" a man comes and asks what is going on..i asked zaid did u hit the boy and he said he hit me....ect i took Zaid a side and asked him and he told me that he was playing the game, the little boy comes and bothers him. zaid told him to go away..he didn't and maybe he zaid hit him first i don't know. But then he said the big lady hit me in my head! you have to call the cops mama. The sadness in Zaid's face was so different ...i believe him. My friend was late so i took the kids to eat in the place next door..and my blood was boiling and did not know what to do! i don't want to let it go..Ammar did not answer his phone....I'm so mad i need to talk to someone! and here my friend calls subhanallah! i told her what happened and she said just call the cops! I'm like really!! she advised me to talk to the manager and check the camera and see! Then Ammar called me and said yes call the cops, and that's what i did. i called the cops...the manager needs time to check.....and oh no! i see these people leaving!! so i went after them and told the guy can u wait few moments cus i called the police and they are coming now..he asked why? i told him cus the lady hit my son! he acted surprise and was translating to his mom...the wife starts yelling.. no your son hit my boy blah blah..i told her i don't care..kids fight...your mom hit my son...i said ok then wait for the police n the camera will show.. here the man goes inside the car n starts driving. i said so ur gona run! and he drove fast...but i made sure to tell him...wrong people runs away...go run a way. my only mistake was not taking the car's#. the police came late too....i told them what happened..it felt silly but I'm glad they came...Zaid told them what happened...and i feel good showing him that no one can hit you. Even though these trashy people ran away...I'm glad i went after them and scared them at least...i don't even care about checking the camera..now i feel like i can sleep today!

I wonder if anyone had a similar situation...how did you handele it...was there another way?