Switched service to T-Mobile and can't find all the account numbers

[smac6590]

I have switched my service to T-Mobile.  There are three phones connected to my account.  We want to port the numbers.  I am told by T-mobile when they tried to do so, Verizon responded there are three separate account numbers and you need all three to approve it.  I found one account number (the one we gave to T-MObile).  I don't see any others. What do I do?

>> Subject edited for brevity <<

Message was edited by: Verizon Moderator

[Tidbits · Accepted solution]

They should be on the bill.

If you had separate bills then you need to check them all.