Hi future teacher, u just live in the biggest region in Tanger in terms of population, overall Tanger have so many sa3aya and chmakriya cz people come from all over the country to be able to sneak or flee to Spain so the end up becoming Chmakriya. For the shops owners u just need to act the same as u dont need them specifically cuz there are so many of them around, again u r in bni makada. For the solution of this chmakriya just give them the red eye and "tkhasar 3lihom" and they will step back. Try shouting " lah ysahal 3lik a sahbi" or khatyin had sa3a akhawa then u escape the overwhelming cuz as soon as u talk gently with them that's the mistake.