# CS agents make customer feel like unsatisfied, upset, angry, etc.
# Customers waited for response too long and contacted in again.
# CS agents promised to get back to customers on their issue but never do.
# Customers are not satisfied with our transactional emails (did not answer their question properly)
# Customers do not want to receive general email sent by the system
# Customers are not happy with a solution adviced by CS agent.