I feel your pain. I spent 3 hours on the phone with the IRS today because they told me to check mid August to see if my 2018 taxes were received. After being passed around 3 times I was told that they are currently opening taxes mailed in April and it could be several months before my 2018 taxes are opened (resent paper copy in July and did tracking through USPS) I was also told to send a letter with my 2018 taxes requesting to waive penalties and interest but the IRS said they don't waive interest. This is BS and I hope Turbo Tax steps up and makes this right.
