Determine the emotional tone of the following tweet: "So about 18mths ago i signed up to @Lumo_Energy for their @VirginAustralia / Velocity FF deal. 18 months in still no FF points". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".
anger, sadness