It can be something casual like having a haircut in your beauty salons, or some more vital services like consulting or law, for example. No matter how insignificant service can be, almost all people get upset and discourage when they receive poor quality service, or received service is below their expectation. In some cases this can cause some serious consequences (property or money lose, imprisoning, accidents etc.). That is why so important to know which companies can be trusted with quality of services that they provide.