Police forcing to shift at different place & husband not paying me maintainance

I reside in my house which is in name of my mother in law .the house is ground + 1st floor i live in 1st floor and the ground floor is on rent. both my mother in law and father in law have passed away .i got married in 2019 , i have been resideing in the house from 2019 , after one year of marriage my husband shifted to different city without informing me , after contacting him on call he told me that he has gone there for some work and will retutn next month, but he didnt returned he kept on postponding the date to next month and so on .meanwhile i was blessed with a baby boy . even on listning that he has become father he didnt return back . it has been 3 years he didnt came back & during the course of time he has not paid a single penny for my monthly expences , i have been maintaining myself from the rent of ground floor . now few days before he came along with the police and is forcing renter to vaccate the house after which i ll be left with no source of income & and he is forcing me to shift to the ground floor from 1st floor which i dont want to do , i & my son is only person who reside in the house . police has given me 10 days ultimatum to vaccate the premises & shift to different floor. is there any law that that can prevent my shifting & can provide me monthly maintainance.