I don't think any of this happened. MAYBE someone in the press box misplaced their phone and was looking for it, and you concocted this whole story and came here in a need for attention.
Consider what you're saying ...
1) There were a bunch of phones sitting on the counter in the press box
2) You picked 1 up and put it in your pocket, without having any memory of doing so
3) You were so focused on the game that you didn't notice this phone in your pocket being called and pinged
4) The calling and pinging were so noticeable that this administrator asked you to look in a specific pocket, where you had this missing phone
5) You have a changing story about whether you also had your phone at the time, or you put your phone in this pile of phones
6) After all this, you think this administrator owes you an apology
Not one of these things makes any sense to have happened. But all of them? Complete bullship.