Daughter-in-law and Son are harassing parents

My brother married for last 6 years is settled in Dubai. His wife after marriage went to Dubai and also called her sister to stay with them. Her sister is staying with them for almost 5 years and now from past one year she has invited her brother also to stay along. In these 5 years my brother has not visited India but his wife has, every time she comes to India she will go to her parents and not go to her in laws place, in fact her in laws travel to Delhi to meet her. Now last year she gave birth to a baby and my parents went to Dubai. She ill treated them and made them sleep in living room while her siblings slept in their personal rooms. She is didn’t speak to them, she never asked them about any food or health etc. my parents cooked their own food, washed their dishes and clothes. My brother doesn’t bother to say a word to his wife and will alway try to justify her actions. My both parents are 65 + and pensioners. Now they are back to India and staying alone, she doesn’t let my brother come to India and neither lets my parents go there to Dubai. She has not spoken to them for 6-7 months and called her entire family for the baby’s first bday and when my parents told their desire to be at their grandson’s first bday my brother told they can attend the bday on cope call. These are just few incidents but my brother’s wife is mentally harassing my parents by not letting them meet their son and grandson and also restricts my brother to financially support them. He is totally under her control and doesn’t care about the parents back in India. This is causing lot of trauma to my parents who stay alone in Punjab. Can my parents file a case against them both and seek their Elderly right through law.