Very Italian Pizza in Rotterdam

Was smoking a joint on the corner of the terrace. I didnt knew it wasnt allowed. Some guy told me to put it out or he would call the cops, because i didnt knew it was illegal over there, he didnt introduce himself as a employee or explained why it wasnt allowed. I told him to call the cops while i put out the joint. He told me he would throw a bucket of water over me, and he continued to grab a bucket of water, while my joint was alrdy out. He came back with a bucket of water and thats where my girlfriend stepped in. They pushed my girlfriend into a corner while threatening that they will punch her and call the cops on her (she is 1,58m), meanwhile 2 guys put me in lock while 1 tried to punch me( im 1,70m/50kgs, not aggresive at al). At this point we left after retrieving my girlfiend, even though i asked them several times about the drink we ordered and that was still there, my joint that was still there. Im a very calm and relaxed guy, and it wasn't necessary at all to solve it in this way