Cheated by illegal bank auction property

I have recently purchased a under construction sarfaesi physical site by UBI Bidar branch , and was able to register the property in SRO. Later when I went for permission from development authority I got to know that it's 100 ft road on the map and no plots allotted on the site. Now I have no property, when I checked with bank they say they can't do anything. I have taken loan to buy this property and now I don't have anything except papers. Development authority says there are no records of layout given in our documents. Kindly suggest, as I understand bank manager knew this before and still they conducted the auction.