Help Needed In Civil Suit

Actually the amount paid by the buyer was  earnest money (advance in token of sale) and you were suppoused to make a receipt for that with conditions  that in case of default by the buyer the money gets forfieted. Even otherwise the money was earnest money and you were not bound to pay back as the deal was cancelled by the buyer.

Now since you have accepted the money as loan by  signing  the bond paper you have  to pay 

As the matter is in court you get some good lawyer who will plead for easy installments. You were free until signing of bond paper

Any suggestion depends upon the pleadings in the suit that has been filed. If the pleadings  are contrary to truth and you have evidence to plead and prove that the bond is just sham to take care of the money given as earnest money.

However, in my understanding, you are required to return the earnest money less the loss if any you have sustained. The suit could also be defended on the ground of limitation.