How Can businesses Have a Bad Reputation?

Sometimes people can accuse them for something they didn't do. Otherwise it's usually the businesses' fault. They can end up in a bad reputation in a way of what they did wrong (lie about their products, treat their workers not right etc.) and how they treat the customers. They could try to do explain about the things they did, or prove that the customers are mistaken in order to get a positive reputation. They can also promote their products or come out with new things with a better quality, and get peoples' interests.