I need a stamp on my passport for employment reasons based on my pending I-751. Was supposed to get a call from an officer to schedule within 30 days, but instead, I got an email around the 30 day mark basically saying there's no appointment available in my field office, if anything opens up, they'll contact me if I'm still eligible. I've gotten stamps before, it was a fairly smooth process, I don't know what happened this time around and frankly I'm not really buying the whole "no appointment available" thing.
Has anyone experienced this? If so, any successful resolution?