Review of Burgerville

I'm both gluten and casein intolerant. We didn't have time to personally vet the place ahead of time, but other locations were ok per reviews. I told the man behind the counter, "I have several food allergies, May I please see your allergy menu or ingredients list?" He wanted to know what I'm allergic to then said he can put my burger on a GF bun. I replied that I have other allergies and not all GF buns are safe, and nicely asked to see the ingredient list for the buns. That's when the circus started. He told me he has a culinary arts degree, his mom has food intolerances, and it took me several more requests before someone produced the list...which he held in his hand and asked what ingredients I need to avoid. I was almost crying by this point. There were no other places in the area that were open and I was starving. When I asked for the manager, he said he was and finally let me look at the ingredients. It was such a negative experience that I wake up in the middle of the night still upset about it. I was polite the whole time and asked for the tools I needed but I keep trying to think of what I could have done differently.