Track down an old standard bank account under my name.

This is not so much a review but I would like to know how I can go about tracking down an old savings account with Standard Bank. I remember the last time it was used was in 2013. I stopped using it because I received a lot of debit orders ... and I am sure that amount has gone up and people stopped debuting the account. I know longer have any reference to the account a lot has change since then. I live abroad now and would like to clear my name from any possible debt when I decide to move back to South Africa. I don't want the past to haunt my future plans . How do I can in contact with the right department?