I came across an article this week that immediately caught my attention: Top Takeaways From The 2017 Customer Rage Study. While the study itself is not yet available on the Customer Care and Measurement & Consulting website, the fact that they have previously conducted similar research and you can filter articles by the subject of “rage” leads me to believe they are a bit of an expert.
http://customerthink.com/three-ways-to-avoid-customer-rage/