Dissatisfactory service experiences and consumer complaints following such experiences are everyday occurrences. Prior research has not only examined the emotions experienced because of failed service encounters but also has explored the resultant behaviours towards the service provider and the service. However, prior research does not distinguish between negative word-of-mouth (NWOM) motivated by marketplace-helping behaviour such as consumer advocacy and NWOM as venting triggered by emotions such as anger and frustration. The current study examines the direct relationship between regret and disappointment and consumer advocacy. Unlike past studies, the current study explores two types of customer dissatisfaction: agent based and outcome based. Study 1 uses a vignette methodology, and Study 2 uses experience sampling in which respondents provide personal episodes of failed service encounters. In contrast with a previous proposition, we find that regret has a significant negative relationship with consumer advocacy. Disappointment based on external events demonstrates a significant positive relationship, whereas disappointment caused by another person has a weaker relationship with consumer advocacy.