Validity of cancellation?

Querist :
Anonymous
(Querist) 21 July 2011
This query is : Open
Dear Members,
This is the fact: A company borrowed a sum from one B, later A executed a General power of Attorney in favour of B for that loan, subsequently B with the power of attorney encumpered the property belongs to A by way of Sale agreement with one C, for that A got and injunction order to restrain B to convey the land and later cacelled the power of attorney executed in favour of B, then A (directly) and C cancelled the sale agreement therein recited that no cosideration involved which no incorrect and already registered sale agreement part consideration received by B as a agent on behalf of A, from C, here my question when a cancellation of sale agreement therein not specified the refund of advance already received.. is this Valid Cancellation???
Kindly Clarify.