The return left out a whole Schedule c and then the support person hung up on me.How do I get support ?????

Ok ... have you filed the return yet ?    And did you review the entire return yet ?  Did you enter in the second Sch C ?  Did you review the Sch C entry section yet ?

It's more likely you were disconnected than a purposeful hangup.  But if you phone back, you'll probably get a different agent.

They have extra hours this weekend due to the approaching extended filing deadline.  They should be open tonight until 9 PM Pacific (12 Midnight Eastern).   And tomorrow 5AM-9PM Pacific (8AM-12 Midnight Eastern).

FAQ:   What is the TurboTax phone number?

https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632

What do you mean by leaving out a whole Schedule C?   Did you go through the interview questions for the self-employed business section?

Have you already filed your return?   Or are you reviewing it prior to filing and can't find the Schedule C?