We upgraded from VDSL to Fibre on Friday (internet is working great) but our phone number has not been ported correctly.  

After three calls to Orcon technical support we can now call out but they have advised our number hasn't been ported properly and we need to wait till their back office can resolve the issue next week.

What's got me really puzzled is that when I call out, the caller ID number shown on the receiving phone is actually my work DDI number (that's with another telco altogether).  Could Orcon have somehow configured my outgoing number as my work phone number instead of my home number?

If so, is this something I can address via the configuration of our gateway router?

I thought number porting was pretty straightforward nowadays so just can't get my head around what's happened.

Any background on how the process works would be appreciated.

Thanks