Can I legally challenge my husband's refusal and invalid marriage claim?

I am a 24-year-old Hindu woman, and my husband is 32. After dating for eight months, we married in a temple, performing traditional rituals. He came to my village, where my father gave him money and a wedding ring. Following the marriage, he took me to his flat, not his parents' house, as he kept our marriage a secret. This was embarrassing, as I had involved everyone. While staying at his flat, I insisted that he inform his parents. He refused, even taking my phone to prevent me from contacting them. After hours of convincing, he finally told them, but they insulted me. Later, he demanded that my father finance a formal wedding, which we couldn’t afford. After learning about my past relationship, he cut off all contact, refused to meet me, and drafted a "mutual agreement" claiming our marriage was invalid. Now, it has been two months without support, and my family and I face constant judgment and embarrassment due to this situation. What can I do?