Unfortunately you can't summon an elemental wolf. That's not how magick works and they don't exist on this plane. You can try astral projection if you want to communicate with one but there is no way to summon one here. The spell your referring is to is a fantasy spell, it's not real. Hope was able to help.
Well i think you wanted to summon it physically right you may not know this but you could have succeeded and just didnt see it though if you were able to see it you'd be very lucky as you can most likely summon an elemental wolf as a spirit or astral entity so it could be beside you right now as i summoned a phoenix once and while i didnt see it did something i dont understand to me and then i felt reborn it was fantastic though if you dont mind may i ask for a link to the spell? and while you were summoning it did you feel a strong determination or emotion while trying to summon it?