Unhelpful Call Centre with no logic

<p>I am currently in Germany. I need to process a payment on my credit card but don't have roaming on my particular cell number registered with Nedbank, so unable to get the code. I phone the call centre and ask them to update my number to the one that I do have roaming on and they ask me to go to a branch. I am thousands of kilometres away. There are various questions that can be asked of me to verify the legitmacy of who I am, but absolutely no logic by the call centre agent </p>