Seeking Divorce

Hie, This is Mr. Sharma, im a hindu, staying in Mumbai, native place Gorakhpur, i got married on May'2013 at my native place in a big family ceremony, however in our religion, we get married first, and gauna (bride comes to in-laws home) takes place after some time, in my case gauna took place after 3yrs i.e., Februaury 2016, she came at my home, we got physical as well about 4-5 times in 1 month, and 1 month later, i can sense she is not loyal and certainly not a good character women pertaining to her late night calls and sending her photos to every guy on her contact list, on 25th april'2016, i had send her to her parents home & since then she is at her parental home and not living with me as i dont want to accept her and live with her, our marriage is not registered and i dont have any proof against her, but her family is very rich, i want divorce but they are asking for 15 lakh rupees as compensation or else they will not give divorce, and its been 9 months that we are not living together also, kindly help & suggest something.