Deepavali Question- Smile Please!!

Tony obtained 3 seperate money judgments in the High Court against Sonya,Sunita and Subra.The judgment against Sonya is for RM250,000 and was obtained in July 2006.The Judgment against Sunita is for RM350,000 and was obtained in June 2000.The Judgment against Subra was obtained in 2004 and is for  RM120,000. Assume it is now December 2009 and all three judgment debtors have not satisfied their respective Judgment debts.

Sonya is the owner of a piece of land. Sunita is a firefighter.She is also a song writer and received royalties from recording companies.Subra has RM50,000 in a savings account with NESCO Bank.He owes NESCO Bank RM10,000 under an overdraft account.Tony owes NESCO Bank RM40,000 under an overdraft account.

What steps, if any, may Tony take to enforce the aforesaid Judgments? May NESCO Bank set off the sums owed by  Subra and Tony if Tony proceeds against Subra's savings account?