Why keep my keys?

Hey My space its been awhile since my last posting mostly because i havent had much to talk about. Ive been thru a lot since the last time and i just wanna speak out about it. I was in this relationship for 11 months and this nicca had me fooled...lol. I thought the love was unconditional and he told me that he would never leave my side. I even went the extra mile and let down my walls to get an apartment with him. (i know right) But this nicca was soooo unappreciative. He nagged about having friends and wanting to flirt on myspace. He thought that shyt was not so BAD! lol In all i never in a million years would think we would end like this over some arguements and some basic bullshyt. I mean out of all this i was left with bills over $200 each and thats 3 of them and rent to pay while this nicca moved out over night and never planned to face me like a man. And to this day he doesnt call or even plan to apologize for what he has done. And to add to all this he hasnt even given my keys back or my gate card for the complex. WTF....why? And when i decided to call and speak he asked how i was doing and i told him then he was like you made me depressed beause i didnt know it was that bad but yet and still NO APOLOGY. I need some advice got any?