Landlord problems

So my old landlord is pulling some shady-ass bullshit on me.

I called before to ask when I can get my security deposit back, and was informed that he "doesn't do it like that" and that I am supposed to get my half of the security deposit back from my roommate or from the new tenant who is moving in.  Now, according to the Attorney General's Tenant's Rights guide, "[t]he landlord must return the security deposit, less any lawful deduction, to the tenant at the end of the lease or within
a reasonable time thereafter."  To me, that says that if one tenant moves out, he/she is entitled to the security deposit.

I should not have to go to my roommate, whom I hate, or the person moving in, whom I don't know, for my half of the security deposit back.  Which we paid separately.  He and I didn't combine it; we each paid our half, so now I want my half back from the landlord, which he has so far refused.

He is supposed to call me back, but if he does not by three, I'm going to call him again and quote this section of the law, and explain that this lease I have nothing to do with, and therefore it is not and should not be my responsibility to get my money from a new person.  I think he just does not want to go through the trouble of having to contact my roommate and shit to get the second half of the security deposit back.

But if I have to, I will threaten to go to the AG office and get attorneys involved.  I have someone I've known for years who is an attorney, and Brendan's sister is too, and so I have plenty of people I can go to, just in case he calls me on my threat.

This is ridiculous though.  I shouldn't have to do this.