Mother property going to auction after her demise

My mother taken loan from bank.when she alive.property is in her name she mortagage for security.auctual she sarted masala manufacturing business after she get loan business is going in loss she never able to pay loan.no single notice served by bank.after 8 years they send notice again they go to drt3 chennai finally bank get order to auction property in 2015.they is no bidder that time.after that my mother passaway in 2016 nov 11.my mother have 1 son 3 daughters.as a second daugter l approch bank to settle loan as ots they final 14.5L .l have no source for huge amount to pay.for stoping auction l wish take loan to pay ots. if they want to give ots grant letter frist u paysome amount i pay 2L40 thousand then they granted ots letter in my name given time to pay in one month.but lam not able to mange then they issue notice to all heirs if it not payed it goes aution 2019 23rd april .is there is any solution to aviod auction .truly telling they no source to mange this huge amount.my brother so slefish he is not helping us .elder sister is divorced she has no source to pay .yonger sister she also nosou rce to pay.pls give solution to stop auction .