In 2021, Trustpilot surveyed 2,000 people in the UK, US, Australia, Netherlands, France, and Italy, respectively. They asked if these people were harboring any kind of grudge over being passed on for a job, getting dumped, or being mistreated by staff. The study revealed that 78% of people feel some sort of lingering resentment. The most common grudges were about betrayal, false accusations, getting cheated on, and another person not paying them back.