The salvation army offers free long term detox/rehab worlwide.
I don't know what a "crisis center" is, but maybe its just detox, which is usually just a few days.
Even if places "won't take him", the social workers there have other referrals.
AA is free and won't turn him away, in the meantime.
Good for you for upholding your decision to not be his treatment center, you're not qualified anyways, mama!