It looks like the only think that’s worked so far is bindings.
I’ve tried binding, which usually gets the job done.
I didn’t see a suggestion to try a n exposure spell. Did you try anything out of the Baneful Magic book?
There’s also this:
That itself could be causing confusion and lust for results. In which case none of the above will help. Or it could just be the energy flows are very strong and will take time, and maybe more effort to affect. You have to get your heart involved not just the mind, you have to really want the outcome of the spell at every level including your higher self.
So, if as someone suggested, your own energy is disallowing this approach, then I’d suggest contacting your higher self, as if it was any other entity, and asking it about the matter.
To completely switch things up, instead of a blunt attack why not try remote influencing?