Desktop Hardware and Upgrade Questions

I ordered a PSU from the Parts Store on June 11th with expedited delivery. The order was opened the next day and has since been in "your order is being processed" limbo. I have checked to see if the part I ordered was in stock several times since I made my order, and it has been in stock every time. Initially, the estimated ship date was June 15th. I thought this to be a bit tardy for expedited but passed it off under the presumption that COVID somehow caused a delay. By June 15th, the estimated shipping date was pushed back to June 30th, then to July  15th, and now it is sitting at July 31st.  In the past week or so I have called HP tech support and the sales team several times. One time, the person who answered my call said she contacted the shipping people and they would send me an email explaining the problem - I never received the email, and the shipping date became July 31st the next day.  My recent call had me redirected to send an email to hpparts.sales.ams@hp.com, I sent the email explaining my troubles two or three days ago - no reply. I'm unsure what the problem may be, perhaps some kind of system failure or my order was, for all intents and purposes, lost. All the same, I hope you guys can help rectify the problem, whatever it may be.

TL;DR: Ordered an in stock part on June 11th with expedited shipping; estimated shipping date has been continuously pushed back to July 31st.  Contacted HP several times to no avail.