How many of them are teachers or parents or fans who think they are national top 100 recruits?
It's wild that you're so disappointed you never heard back without knowing any details on if they saw your email, followed up on it, were in contact, etc. What are you looking for, a text from Frost that says, "Thanks for the good tip The Scarlet Pimpernel, he looks like a great player but after being in contact (because of your great suggestion) he isn't interested in coming to Nebraska. Seriously though, good job!"