Hi, newbie here,

, im a university student and im renting in a student house from a private landlord.
Our backgate to the garden broke in the summer, so my housemates and i notified the landlord. In response, she said that she would get a quote and fix it. Nothing happened. So in December we wrote her a letter to ask for it fixed again (and various other parts of the house which she failed to kept up the maintenance with). Today she came round and removed the the broken gate and also wrote us a very rude letter saying that "...most people dont have a backgate to their house and it wont make much difference to security... we got a quote and will get it fix...".
Now, there was a burglary recently in our area so i am really worried about my safety. And also, it says on the contract that she had to repair all the structure of the property including doors, windows etc. And wouldnt the fact that there was a door there to begin with at the start of the tenancy makes it necessary for her to fix it? And why would whether other people have a backgate make any difference to our contract?
So assuming that she doesnt do anything to get the gate fixed as she promised. What can i do? Where can i get help? I'm really frustrated because i know a lot of landlords pick on students because they think we cant do anything to fight back.
thanks