Mental harassment or torture

I m muslim girl..i have hot married before 2 years in 31 august 2013. now i have 1 son of 19 months.. my all in laws family are living in the same hosewith saparate rooms...from the starting of my married life i m getting mentaly tortured by my in laws bt now a days i m goning trough a very heavy mental torture... my room is on the 1 floor n by my room's side my jeth jethani's room... before 1 year my hsband build kitchen,toilet n bathroom in front of my room because of my incovinvenens with the small baby... from last 1.5 years i was living with my husband in delhi due to his work is there..n naw before 4 months i came back n shifted in my sasural..when i was not here my jeth n jethan started using my room kitchen toilet and bathroom...now my jeth n jethani are mentaly torturing me nnot emptying my space exept my room n all the time they said jaisa hm chahenge or jb tk hm chahenge wo sab istemal bhi karengeor saman bhi rakhenge...tere bap ka ghr nhi hai ye...n they use to abuse me all the time specially my jethani ..they both also defaming me by shouting at me n saying too many bad things to my family n my character n all. plz guide me what should i do legely to get releif of my jeth n jethani's mental harassment n when i lived in my sasural i live alone with my kid as my husband is in delhi for the work...