Nope. 

Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax

Or you can post here  on this PUBLIC forum. 

i cannot access my registered phone number.

Are you saying you cannot log in ???    If so try another option ...

-All I 3want to do is unbind an unavailable phone number..  I can get by that 1st check, then I'm asked for further ID via an address.  I've had multiple addresses since I started this return and don't know which one I registered with.

I wanted to ask someone at Turbo Tax if 3 months is worrisome for an e-filed tax return with all permeameters unchanged from recent filings  Except that oe address which is now in Belize?