Lost monitors in shipping, unacceptable and rude Customer Service response

I placed 2 orders on 3/26. Each one was for a U2725QE monitor. They shipped out and were to be delivered on 3/28.  Both made it to the warehouse and the last tracking update was 3/28 for both. It was clear they were lost when UPS noted a claim should be filed. After a number of calls one of the monitors was deemed lost by Dell's investigation and Rohit (thank you for the help!) took it upon himself to place the replacement order. That arrived on 4/7. The other monitor (from order <Your private information was removed from public view. DELL-Admin>) has still not been shipped out. No one can give me a straight answer. I was told 4 times in 3 days I'd get a call back in an hour. No one ever called for an update. I was told twice it'd ship out in 24 hours.  It still hasn't. One time I asked to speak with a manager and the rep stopped speaking for 10 minutes even when I asked if anyone was there. I heard things in the background and they literally just weren't responding and they finally hung up after 10 minutes of that. Just completely unacceptable. I've asked to escalate and talk to others but no one calls or emails. My contact information is up to date. I'm just at a complete loss on what do to and just want my monitor. Can anyone please help?