Disappointed client

We rented a town house with this company and our lease started last year on the 23 of December and it would end in June whereby during this time nothing in the house was fixed the toilets wouldn't flush, the kitchen zinc was leaking and there were a lot of other problems that the agent knew about and the owner but during those months nothing was done after I complained about this and the fact that we were being made to pay charges that we weren't made aware of in the beginning, we decided to move out because the treatment we were getting was bad and now they won't give us our deposit back and they say we are still responsible for that place until the end of the month and they say we still owe them and we feel they are the ones that owe us our deposit back. Jawitz will say rent on a certain house is so much but then there are other charges that they add whereby you don't pay the amount that was advertised