I work for a disability services company, and recently decided to up-skill myself. I got approval to undertake a short course, put in for my days off and attended the classes. I gave plenty of warning and notice of the days I would be unavailable for contact and – most importantly – when I would be having my exam.
During said exam (while my phone was on silent but still on my person), I missed half a dozen calls from a co-worker and a subordinate employee, followed by a text asking me to call back ASAP it's important. Thinking there was an emergency, I panicked and rushed to complete the exam at risk of failing and having to pay to retake the course.
The emergency? They forgot how to multi-send an email.