Do you use an online app like Instacart Or bitesquad? Normally there are “notes on how to deliver” that you can add. I normally give a very detailed sentence on how to get to my unit. When they call, I ask if they followed the instructions I gave. For example, “after turning onto STREET NAME, take first right. My unit is last on the right”. Obviously tailor it to your instructions, but I find that if I give good instructions, then They never call me.