I've been reeling for two days now because my WAW took a step back, and your H, who you're taking steps toward, wants to torture you. I don't get it.
Anyway, that crosses a line, doesn't it, when you're locked into a room, asking to be let out, and he plays games about it and calls you names?
I don't know exactly what to say, except that if it were me, I think I'd tell him in no uncertain terms that when I need help, either help me, or get the f*ck out you useless piece of sh*t. I think those are the words I would use to get my point across.
I don't think you can allow any more of this. DB doesn't mean not having boundaries. Enough is enough, and I know you feel that way. He has to shape up or ship out, otherwise this is going to go on until one of you seeks a divorce.