dissatisfaction
//ˌdɪs.sæt.ɪsˈfæk.ʃən//
Noun
1
A feeling of unhappiness or disappointment resulting from unmet expectations or desires.
She expressed her dissatisfaction with the service at the restaurant.
2
The state of being displeased or discontented with a situation, service, or outcome.
Customer dissatisfaction with the service led to many complaints.