Just so we understand, you had a GV number and a landline number from a telco, both independently up and working correctly.
Then you ported your telco landline to your GV account (GV Account 1) and it became a new GV number, and the old/former GV number you had on "GV Account 1" went into what Google seems to describe as a 90 day waiting period.
If yes to the above, then:
- Likely no way to reclaim the old number, per google voice FAQ
here.
- This sounds familiar in that it may have been discussed on here before. Try searching, it seems like there was some simple trick/work around that corrected the issue.
- If the above doesn't work, look over the GV FAQ and then post in the
Google Voice Product Forum.