I just opened 360 account online via internet banking today.

Has anyone tried changing the primary account linked to debit card from savings EasiSave to new 360 Account over the phone? I tried calling the CS but she was unsure how to do it (told me there is no need to link the debit card to new account). Should I try calling again tomorrow and maybe talk to another CS officer? The OCBC bank branch is far from my place.