This appears to be a bug in TurboTax when the taxpayer is marked as deceased. It was refereed to the developers months ago and was reported to be fixed in an update, but it appears that it was not. As of now the only workaround it to print and mail the return.
You can call customer support to ask for a status on any pending fix, but as of now I have not heard of any. Nobody in this public forum can call you - this is a user forum - not TurboTax support.
There is no single published number because it changes contently depending on the nature of the call and agent availability. Following the link below will either give a current number for you to call or take your number for a callback.
(Note that phone support is for paying customers only. There is no phone support for Free Customers.)
Here is a TurboTax FAQ for contacting customer support.
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
