I essentially work minimum wage, and while I would love to get more money, I realise raising minimum wage would just increase the prices of everything else. I trade a raise for more respect given to me by customers. Some of them are just turds that treat you like crap because they realize you can't do anything if you want to keep your job. I always have secretly wished some retail worker would snap and go on some customer killing/maiming spree so that some of these people would think twice about how they treat people they have power over.
Get used to it Buddie.
It's going to happen for the rest of your life.
And if it isn't the customers, it's your boss.
Get the skills and education to get a better job or learn to live with it.