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: Zero help from @ups customer service. Just pushing the buck back and forth and promising callbacks that don’t happen.  #loathing
This tweet contains emotions: 
anger, disgust