I had given loan to someone who had given me an irrevocable POA to be used three months after I give him notice of default. Now he has argued that the amount claimed is not correct and various other defenses in his response to my notice. He has also issued notices in newspaper to revoke the Power of Attorney and stated in letter sent to me that I should approach the Court to resolve the dispute.
Can he do this? Can an irrevocable POA be revoked without going to Court? What grounds are there to do this?