Bloomberg did it to me. Even blocked my phone number. I figured that out when I changed my caller id. It was back in the day when VoIP was new and they didn't expect that someone could do that. It was worth hearing the panic on the voice when they realized who it was.
The only reason I called was because they stiffed my the reimbursement for travel expenses which they had agreed to pay for. The HR turnover was so high that everyone I had talked to before the interview was gone by the time I put in for the reimbursement.
Interesting, when I worked at Bloomberg we had a standard form letter for rejections that was sent every time. (Email)
Funny story about that, I'd set up a macro to fire off said email with one keypress. Finishing up a phone screen that went horribly, I thanked him for his time and all the other niceties, and pressed the key right as I was about to hang up.
Couldn't you just say the same thing over the phone? Or do you need to keep the mask on during the call? As if the rejection is only possible in the next turn.