Several people have had problems banishing certain creatures, a couple of which also related to them not attacking. If you keep casting Aura of Command (on summoned or non-unique resurrected creatures) up to the skill level you have, it should 'bump off' the problem creature, after which you should be able to either banish the new ones following you or sleep to destroy them. The last similar issue that I recall (vaguely) involved a couple of scorpions.
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