You were suggested to file a writ petition before high court on the lines as recommended.
You have mentioned that a writ petition has already been filed in this regard.
So you may wait for the court to dispose the case.
If you suspect your lawyer's integrity you may change the lawyer.
If you have been informed that the high court has granted 4 weeks stay. then you may wait for the response from the respondent bank after which you can proceed with your grievances and grounds seeking desired relief.
The bank cannot accept the collateral security without the consent of the property owner.
Since you have given a power of attorney deed to somebody authorizing him to act on your behalf, you cannot come out with a complaint against your power agent st this stage.
You are responsible/liable for the acts of your power agent, you cannot disclaim now.