Final answer:
Most people switch suppliers due to dissatisfaction with customer service.
Step-by-step explanation:
Most people shift from one supplier to another because of dissatisfaction with customer service, not price or product offerings. When customers are not satisfied with the level of service they receive from a supplier, they are more likely to switch to another supplier that offers better customer service. For example, if a phone service provider has poor customer service and customers have difficulty getting their issues resolved, they may choose to switch to a different provider that has a reputation for excellent customer service.