To stop a POA you granted for another person, you should complete a revocation process. Details as following:
Step 1: Find a revocation format
In this step, you should find a format to follow so you can write a notice revoking your POA. This form can be available in libraries, legal aid services or you can ask your professional lawyers to send you a link or hard copy of blank forms that you can either copy or fill out.
Step 2: Complete a revocation form
The key note in this step is to identify yourself and specifically state that you are revoking your power of attorney and the powers you granted to the person you named in it. Include the date of your POA.
Step 3: Sign the completed form under witnesses in a public notary office.
This step is to make the revocation form of POA legal.
You should take two witnesses who can be a banker or your law consultant to come with you to a notary public. Make sure that you and your witnesses have photo IDs with you. Sign the form in the presence of the notary.
Step 4: Write the word “revoked” in large, dark letters on your POA.
Make copies of your POA, as well as your notice to revoke it. Attach a copy of your revoked POA to each copy of your revocation form.
Step 5: Mail a copy of your revocation notice with its attached revoked POA to the person whose power you’re revoking.
Send copies to all institutions, banks and health care providers you authorized him to deal with. Do this by certified mail, return receipt requested, so you have proof that each person or entity received it.
Give up the granted POA.
If you want to give up the power that you are given by the principal, you must arrange to have it removed by the Supreme Court or an administrator appointed by Civil and Administrative Tribunal of your State, for example the South Australian Civil and Administrative Tribunal SACAT.