Validity of exparty divorce taken by fraud

Hi, I am an NRI My husband filed a divorce petition under the grounds of cruelty and desertion in 2012.He also filed a custody for my girl child (who was living with my mother in India) .He filed a custody case but never came to meet the child .In year 2013 I gave custody of the child to father .He accepted the child in the court but left her outside the court premises stranded.I had no other choices but took my daughter back to my mother's place.Since I am an NRI ,it was gettting difficult form to attend all dates and my daughter was stuck in India.I had to agree to all his terms and conditions like me and my daughter will never ask for any maintaiance and all the cases like DV act will be withdrawn.It was also agreed that my husband will change the divorce petition of cruelty to mutual consent divorce.I withdrew all my cases as agreed in the document within 7 days.However,my husband did not withdrew all cases within 7 days .Rather he took an exparte divorce without disclosing in court about the agreement done in front of the judge.He send me divorce document over email after 3 months when I was already overseas.I had no other choice but to accept his fraud as I also got engtangled with my daughter's and family medical issues.Recently I got to know that he go remarried with his girlfriend with whom he was dating already.I want to know -Can I now appeal for contempt of court after 2 years?Also am I also free of agreement since he has not even obeyed the same?Can I reopen my domestiv violance case as well which I had to close it as per the agreement?Can I ask the court to setaside the divorce decree as he has done fraud with court ?