Look at the Call ReRouting form for the extension 2302/2382, make a note of each of the Alternative numbers (but probably 1st Alternative) then check each ReRouting Alternative form for that number see what it is pointing at.
Alternatively, open the Call ReRouting First Alternative form, click the "Go to" drop-down menu, select Directory Number and put in the extension of the user who is getting all these calls and see if it's in there.