Or something like it.
“Thank you for sending us your message. We read each and every one, but unfortunately, since we receive hundreds of emails every day, we are unable to respond to all of them.” (emphasis mine)
Duh, you just responded to it. Why not simply provide the link/document I was asking for and be done with it? Ahh I forget, you never had it to begin with.
Note: This was not an automated response.