I contacted MileagePlus service center via email a few days ago. (regarding LH lounge entry denial because of lack of physical Premier gold card)

Some agent called my number at 3:42AM Pacific time this morning. My phone number is a California number, but I'm actually in Europe. My Google Fi Pixel phone rang, I was still too sleepy to wake up, so I let it go to voicemail.

I just listened to the voicemail. A very nice-sounding agent apologized for the issues of getting into the lounge. She said that she had ordered a physical card to be sent to me, but it wouldn't come until mid February. (which is fine by me)

What I'm really curious is where she was calling from. I can't imagine UA MileagePlus have employees working in California at 3:42AM on a Sunday, or anywhere in the US at that time. However, she absolutely did not sound foreign. If I had to guess, I would say she sounded 95% like Tina Fey. (no offense to Tina fey fans) I let my lady friend listen to it and she also said the UA agent sounded almost like Tina Fey.