What legal action can I take after being cheated by marriage?

Sir, my question is that I had a relationship with a boy, but suddenly, his family decided to arrange a marriage for him without informing me. They told him that due to family emotions, he had to marry, and they cheated me by promising marriage. They had told me that I would have until the 15th to marry him, but I was not informed that he had already married. I feel deceived. Sir, please guide me on how to handle this situation.