Procedure in case wife and her parents forcing for ex-parte divorce

I'm, 30, Hindu. We got married in 2014 and since the first month, we had issues and my wife literally would have mentioned divorce in 100s of occasions. We scarcely lived together for a total of 6 months. In 2016, October, she went home and never came home. It's been 1 year since, I tried to make contact, and she is avoiding it and have been asking for divorce. I recently came to know that she is posting pictures with someother guy as her boyfriend. Her father is a lawyer. Now, they called and said that, this marriage will not work out, so we will get divorced. I agreed. They say they are not willing to appear in the court and asking us to take exparte divorce. They are asking for 5 lakhs rupees cash. They say that they won't mention even the 5 lakhs as alimony in the write up. They are neither interested in appearing in court nor do they want to mention it as alimony? They just want divorce. Can exparte divorce be revoked? What should I do now? Please advice.