Divorce complications

Hi, I have been married since Jan 26,2017. I was staying with my husband along with in-laws. He has been very irresponsible in taking care of me and never bothered about me as he started spending nights outside house and used to come very late from office i.e; around 12 or 2 am in the night. This was happening right from a week of marriage. Our marriage was not consummated as he asked for some time. Within 3 months he left house stating that he is impotent and did'nt want to continue with the marriage. He states that he knew this medical condition of him before marriage. But he still he married demanding lavish wedding. We had to spend around 25 to 30 lakhs for marriage. Since he left his house he has been in touch constantly with his parents but he never used to be in touch with me. Me and my family were never able to trace him out , he never picked our calls or neither he responded. Atleast he never came forward and stated his problems with us .He used to weird and evasive replies whenever he was asked for. Since then I am staying at my mother's place. Now he and his arrogant lawyer has came forward to settle the matter by giving 10 Lakhs and going for mutual divorce. Ours is a Roman Catholic marriage. When he left his house I was still staying with my in-laws for about 3 months I used to give my entire salary to them. Apart from this his parents used to demand for dowry and has given me mental harassment during this time. I am confusion as I am not able to understand the law. Is there a way to get divorce ASAP and also punish him? Thanks