Product: Debt collection

I moved in XXXX XXXX XXXX  in XXXX XXXX on XX/XX/XXXX. This was a Roommate situation where I moved in with XXXX XXXX. The address for the apartment is XXXX XXXX XXXX XXXX XXXX California XXXX. XXXX had already lived in the Apartment and I was adding on to his lease. By the XX/XX/XXXX, I had informed the front desk staff that leaving with XXXX will not be a safe environment for me and my dog. I had told the staff that he had called me the XXXX XXXX  and I need to be placed into my own apartment. I had told the staff I was willing to sign a new lease and pay a new deposit. The front desk staff told me that I needed to work it out with XXXX and they do not get involved with Roommate disputes. Unknown to me, XXXX also had a runaway female living with him which I informed the front desk staff about. A week later, I made a second attempt to move out into my own apartment within XXXX XXXX in which the front desk staff told me there was nothing they are willing to do and I needed to work it out with my roommate. I told them, I don't feel safe living in that environment in which they did nothing. I had informed them if XXXX continues with this unsafe environment of harassment towards me that things will not end well for him. They informed me once again that they do not get involved with roommate disputes nor will they place me into a new apartment. On XX/XX/XXXX, Me and my dog came home to an intoxicated XXXX XXXX. He became biligerant towards me, spray me and my dog with water, called me the XXXX XXXX  and called the cops on me. I was literally in the house for 5 mins. After the cops left, I went back to the front desk and demanded them to place me into a new apartment, which I was then told by the property manager that it is best for me to move out but he was still unwilling to place me into a new apartment. For the next 2 days, I stayed secluded in my roommate and tried my best to ignore XXXX. On XXXX Morning at about XXXX XXXX. XXXX XXXX came bursting in my room, grabbed my dog by her next and threatened to throw her out of the apartment. At this point, I was fed up with his antics and defended my dog. A neighbor called the cops and XXXX was arrested and I filed a Police report with the XXXX XXXX Police Department Downtown division. The next morning, I once again went down to the office and told them, I need a new apartment and your negligence is why the events that happened, happened. They told me, that they are vacating our lease that went into effect XX/XX/XXXX and we needed to move out. I moved out on XX/XX/XXXX. XXXX XXXX didnt move out until XX/XX/XXXX. When I moved out, I was informed by the Property Manager that I was moving out with a XXXX Balance because of the circumstances and the fact that I lived there for less than a month. A few months later, I received a bill for {$11000.00} for the entire year of the lease plus any damages to the apartment cause by XXXX who lived in that apartment for 2 years. When I called the office about the bill and why I have a bill, they told me its because I moved out before the lease was complete and that I owe this money. If anything they owe me for my pain and suffering and negligence. Because of their negligence, I had to sleep on a couch for 3 months until I got enough money together to find another apartment. I had tried numerous times to reach out to XXXX XXXX XXXX as well as their Parent company XXXX XXXX in which nothing is accomplished. I have also disputed this bill on my credit report because they have placed this bill into collections and it is preventing me from purchasing a home. Please I don't know what else I need to do because I do not feel I owe them anything.