I need a help

Okay so I had Barbatos fully leveled up,as an apostle or whatever it's called,and I used him in the drum circle,to get sin,and he was damned,however,I'm trying to figure out where in the 7 hells the bastard went,I've ran a crusade through all 4 things,and no luck,I don't even know if I've run into him or not,please help