I can completely empathise with the OP in this case, my family run a takeaway and I have had to work for my parents at the weekend since I was 15. When we first started out, we would get kids entering the shop and using it as their hang out, we promptly chased them out as they never ordered anything and would disturb other customers.
This began to get progressively worse and worse, with the kids starting to damage the shop itself with any means – eggs, flour, rocks, fire crackers, waterbombs, on top of the usual racial abuse we had to endure. My dad tried to befriend these kids (13-16) but it only made things worse.
Time and time again, we called the police and they would come, eventually and the kids would run off. Eventually the police put a patrol in the area, which helped a lot but the police have better things to do with their time (in my opinion) than chase kids. Even when they were caught in the act by police, they were continuously let off with a warning and would leave us alone for a few weeks. Once they took it a step too far and “physically assaulted” (was like a shove) a member of staff outside of the shop, someone else stepped in to help out and caught the culprit and he eventually got taken to court and subsequently got a record/fined.
We couldn’t even fight back – We just had to sit there and endure it, all we could do was call the community liaison officers or the non-emergency police number and wait, try to not let it get to us. Customers would usually get involved but it got to the point that if a customer is getting involved – it’s affecting your business. You had to be pretty thick skinned to work there.
Admittedly there were times where it would be raining heavily outside and these kids would come in to buy some food (like a portion of chips) to have shelter from the rain and it would be satisfying to throw them out.
Eventually the first generation of kids grew up and took their grievances elsewhere, then you had to deal with the second generation – like kids who were too young to take part but idolised these older kids, wave upon wave… we just sold up, 10 years on.
We still see all the kids around who made our life difficult, as my brother works as a GP and my mum works as a health visitor, helping young mums tackle teenage pregnancy etc – we have our laughs.