I can suggest you use the Developer tools to manually add numbers outside of a script
You will need to gather the contact list ID for the DNC list and then use Add Phone Numbers to Dialer DNC List.
To ensure the number has been added, I enter it twice 1. with the international prefix without the + symbol and the 2. without the international prefix
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Darryn Chang
Stuff Limited
New Zealand
2 Years Purecloud
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