Engagement..found out previous relationship

Hi, I am Deepti. I got engaged on Nov 2nd last year to a guy working in Dubai. He and his family always treated me very bad but I thought may be he has work pressure and tolerated bad as in gifting very cheap items and expecting expensive items from us. He used to feel insulted to upload our pics any where in social media and he had removed engaged status in FB also. When questioned he said he does not like to show off. 2months back I found out he had previous relationship and seems like he is not over it. When questioned him about this no call or message from him or his family for 2 months. August is the marriage. 2 weeks back his family arrived and said they will speak to groom and make him call me and clarify things but not a single call or message. In future if he comes also what is the point where he just kept quiet all these days never explained things. What kind of Marriage can be expected from these kind of people? We have spent huge money on engagement ceremony... there is no my fault here.. why do girls side undergo such loss and such pain from that family. What solution do I have legally?