Nonu Singh (Engineer) 26 November 2014
As you have not clearly mentioned as to what are the contents of such MCD agreement, its difficult to give a appropriate opinion.
You do this purely on humanitarian grounds, if the bank has asked her to get you and be present while operating such locker and also sign such documents, you better do it that way. Or else your ex will keep pestering you about it till she gets the locker operational.
You may try and put a condition that she give back the gold given by you in return of the favor she wants you to do. Legally its not possible to get back such gold unless such has been mentioned in the MCD agreement details.