Should I leave my retail job?

So my first job was at a pizza place, and I worked there for six months, then I got a new job at a clothing store. The pay there is a lot better, and I get decent hours. However, it’s very obvious that the store manager and the administrator are showing favoritism to other employees that don’t work as well. I have sold over 180 credit cards in the five (almost six) months that I’ve been there, but they still give me the bad hours and ask me to make up for the credits they didn’t get in the daytime. I have another retail job in mind to apply for, but the wage might be cut by a dollar or two.