Can a owner send 5-7 men to inspect a rented flat where a single girl stays without any prior notice

I stay alone in an 1 bhk in kharghar,navi mumbai on rent. My flat is registered under the name of my mother,brother and me. They don't stay with me and visit sometimes. I am currently pursuing mba hence I am here for my study purpose. I pay my rent on time and in the agreement it is mentioned that whenever I shall be leaving the flat I shall be informing the owner 1 month before and he can show the flat accordingly to other people. In evening 6-7 men came out of nowhere and tried to barged inside my flat saying that owner that said to see the flat as the property might be selling. When I called up the owner he rudely told me to let them enter. I said let a lady accompany them but he didn't listen. I forcibly closed the door and didn't let anyone of them in. My broker told me the same thing that since you are vacating the house,there is no point of letting unknown men enter and see the property. Please enlighten me if there are any rules to support my case. I am helpless now as I don't know any property lawyers in my area.