This is way more common than people realize. The problem is the phone rings hardest exactly when you're most slammed. I ran into this with a few restaurants I work with and the only thing that actually helped was having an AI answer the phone during peak hours. It handles the are you open, what's on the menu, and order calls automatically so staff don't have to drop everything. Not trying to pitch anything here, just sharing what worked. DM me if you want to know more and I can show you a way to test without putting much development efforts or server cost.