Tā wèi gōngsī gàn le èrshí nián, zuìhòu què bèi yí ge diànhuà cítuì le, tóngshìmen dōu hěn hánxīn.
After twenty years with the company he was dismissed with a single phone call, and his colleagues were all deeply disheartened.
Tips
usage
Usually 让人寒心 or 令人寒心. The disappointment comes from coldness or ingratitude in people one trusted, so the heart "turns cold": 寒 "cold" + 心 "heart". 心寒 means the same.