Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
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