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: @EurekaForbes U got to b kidding me. Anu from your firm responded  when I sent the contact details.  #customerexperience
This tweet contains emotions: 
anger, disgust, sadness