Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @_iConceitedOne_  Hi! We hate that you're unhappy your bill keeps going up! What unique features do you want with your plan? ^RobertS
This tweet contains emotions: 
disgust, optimism, sadness