Bank property which i bought was sold before auction by mortguger

Sir i have bought an acution property from obc bank in year july 2012 ..latter i got news that the property had been sold by the pervioui have bought a acution property from obc bank in year july 2012 ..latter i got news that the property had been sold by the pervious owner who has been kept his property as mortgauge in bank..by duplicate papars...that i informed to bank..and ..bank authority assured me that they are bounded to give me that property by clearing all issue...and now the case is pending for decision in high court ..and no bank official taking interst in my case ..the third person who already purchase that property is now fancing that land...i ask to bank that take some action against him ...but official still waiting for decision..though they knew that property has been already in name of third person... bank wants me to back my money..sir my quetion is should i take back my money ...that has been already devalued...i ask bank i am ready ..if bank give me back my money in current market rate...is this possibles owner who had been kept his property as mortgauge in the bank..by duplicate papars...that i informed to bank..and .then the bank authority assured me that they ware bounded to give me that property by clearing all issues...and now the case is pending for decision in high court ..and no bank official taking interst in my case ..the third person who already purchased that property is now fancing that land...i asked to bank that take some action against him ...but official still waiting for decision..though they knew that property has been already in name of third person...now bank wants me to back my money..sir my quetion is should i take back my money ...that has been already devalued...i ask bank i am ready ..if bank give me back my money in current market rate...is this possible ?