I just went to the National bank of Greece here on Skopelos to ask for a friend about updating her bank details without her being here on Skopelos and talking to the bank employee he told me that it is possible to update your bank details from abroad when:
1) you can still get into your internet banking bank account
2) the telephone number you have given for the security codes is still the same
To submit the papers that are needed go to systems:
in the right hand corner of the page in your internet banking account.
Then choose view profile and look at the information they request from you.
If you have those documents scanned on your desktop or telephone you can admit them and have them checked.
I don’t know have any details that I need to add so I cannot try it out but hopefully somebody who is stuck can try it out and let us know so we can help others. I will also hear from my friend. It might help anybody who needs to arrange a meeting at the bank on Skopelos to fix this. Works both ways! You might not need to go and the bank meetings are less.. Please let me know if you have bad/good experiences. Daphne