Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @knology has providing customers w/equipment that doesn't deliver speeds of internet services that they have been charging. #unhappy #scam
This tweet contains emotions: 
anger, disgust, sadness