Make a written representation to bank with Subject : Representation to Bank to withdraw proceedings under SARFAESI - amount outstanding below 20 percent of Interest and Principal - action of SARFAESI not conforming requirements of Section 31(j). Explain why the bank cannot take action under SARFAESI in the body of letter and request, for this reason kindly stop proceedings under SARFAESI as it is illegal. The bank has to reply to the representation within 7 days under Section 13(3A), Yes or no to you. They don't reply normally because of lack of knowledge about SARFAESI. If they do not do it becomes a procedural irregularity in the eyes of law and when bank contests your SA in DRT, they will surely lose the case for not replying to your representation. So writing to bank is better from your point of view.
Or to the contrary, if you are wrong and bank is right then also you can demand the bank to submit evidence to prove that the amount outstanding is more than 20%. That will give you time to delay so that you can gather funds.
Your question is this humiliation is right, but it should be raised in appropriate forum. Bank does not require any license to take action under SARFAESI, but if it employs Enforcement agents to take possession of property they require to present their credentials (IIBF certificate is mandatory for them to carry everywhere as per RBI regulations) to you whenever they visit your place.
You see a free country means everybody has a right to do whatever he wants. If you want you can slap the fellow standing next to you in a city bus without any reason. For that he has to complain in PS and plead his case in front of a judge. Similarly bank is free to do whatever it wants. After it completes taking action you can move the appropriate forum to get your grievance reddressed if you feel its action is illegal by explaining to the appropriate forum why it is illegal. But you cannot claim an action which is legal had caused agony to you. Which means if bank initiates action under Section 13(4) and forcibly takes possession of secured/mortgaged asset in front of people, you cannot file a defamation suit against bank calling my reputation is tarnished because of the act of bank. However, if the action of bank itself is illegal in the first place like the bank is educated by you through a representation that it has been initiating proceedings under SARFAESI without following requirements of Section 31(j) then it is illegal action then simply a reveral by DRT of the SARFAESI proceedings is not adequate justice.
IN such cases, if the borrower suffered any loss arising out of the illegal action of bank taking possession of secured asset that has to be recovered from bank. Or as you said, it may also involve mental loss like humiliation for which the remedy lies in Consumer Forum. Bank is a service organization and by taking illegal action, it has committed lapse in its service to its customer and hence liable under Consumer Protection Act. There also you can try your luck.
All the best.