I don't know if that's the most current Mac update or not. You'll have to wait until someone with a Mac comments.
What OS X version are you using?
If you called the phone number in that other FAQ, their system first has to determine if you are using a paid version in order to receive help. Since you are using the paid desktop version, it should have put you through to an agent if you indicated that.
The best way for a desktop user to reach Support is with the form I provided in my comment above and which you referenced. It should either provide a phone number or schedule a callback. Were you able to reach TurboTax Support using that form?
