1)while construing the document one cannot just go by the title to the document or the nomenclature, but, Court owes a duty to see the substance of the document.
2) When the Court is called upon to interpret the document, it looks at its language. If the language is clear and unambiguous and applies to actual existing facts, it shall accept the ordinary meaning.
3) duty of the Court is not to delve deep into the intricacies of the human mind to ascertain one's undisclosed intention, but only to take the meaning of the words used by him, that is to say his expressed intentions.
4) in your case unilateral cancellation of power of attorney has been done
5) you have to challenge cancellation of POA on grounds that it is irrevocable and coupled with interest
6) if court is satisfied that POA is irrevocable it would declare cancellation of POA illegal
7) once POA is revoked the holder of POA cannot execute conveyance deed and convey title on behalf of the grantor."