Consumers, although they are often not even aware of it, make most of their purchase decisions under the influence of certain factors. Consumer behavior can be defined as a psychological process that they go through from the moment they realize that there is an imbalance that arises due to the emergence of a certain need or was created as a result of marketing activities. Consumers constantly evaluate products during their involvement in their daily consumption activities, and the quality of these products affects consumer satisfaction. Consumers demand and want quality and value from purchased products and services. In order for consumers to perceive a product or service as quality, it must meet their expectations, needs and desires. When a consumer buys a product and starts using it, he will be able to determine whether the product will satisfy him or not. Given that user dissatisfaction occurs for various reasons, it is necessary to discover these reasons and not to avoid them. If the company immediately faces the problem of customer dissatisfaction and tries to correct it, customers will be able to forgive and forget that mistake. Customer loyalty is very important because they promote the reputation of the product or service, and their loyalty is based on satisfaction.