E-Filing and Stimulus--Unable to Contact IRS

I e-filed my 2019 taxes March 26th 2020 and received confirmation texts early morning on March 27th indicating both my federal and state taxes had been accepted.  I received my state tax refund over a week ago; however, the status on my federal return is still pending.  Additionally, I just received a check for the stimulus and it looks like the IRS used my 2018 filing rather than the 2019 filing as the stimulus amount was much less than expected.  My 2018 earnings were higher than 2019 and a life event occurred in 2019.   I am unable to contact the IRS (including local offices) via telephone as they are not taking any questions, while there does not appear to be any chat or email support as well.  Is there anyway I can contact the IRS to resolve my current situation of pending status on my efile (over 4 weeks) and incorrect basis for my stimulus check?