This bug has been around for awhile now. I thought it would be fixed when Siri functionality was restored, but it's still present for me.
I'll ask Siri to find the nearest CVS, and then she'll tell me the location of the store. When she asks if I'd like to call that location or get directions, and I say, "call" or "call that location," she'll say "who would you like to call?" I've googled this and it seems like others have experienced it but I haven't found a fix.