Refund of 10% emd

Sir I was participated in property auction and as per rules I paid 10% end. And for payment of 15% on stipulated date I went to bank for getting ifsc code for the account mentioned in mail. But they have given me another account details stating that we will get money fast from this account, but due to mismatching between account details we sent some money on this new account and ask for confirmation but he didn't replied. After two days of due date he asked us when we are depositing remaining 15%.after his continuous follow up after the due date we deposited 15% amount in thought that rights are in hands of authorised officer. But during this whole process after asking for property documents many times they given us new reasons each time. After payment of 25% we ask for property documents for loan process. But now they said due to delay in payment of 15% your EMD is forfeited now,as per terms mentioned in notice. Now they are suggesting for DRT. But most people said no use to go for DRT as result will be in favour of bank and for civil court it takes too much time and they again send you to DRT. pls suggest me whether to go with DRT or any other option for refund of my 10%.