Is A PWN Needed?

[Little Papa3]

In a previous ARD meeting I requested Tier intervention for math.  It was not approved because they stated that they only do Tier intervention for reading.  I did not make that request (directly) in writing but, I did during the meeting.  Since our next meeting is coming up and I had not gotten a PWN, I sent an email inquiring about it.  They called and left a voice mail indicating that we will talk about it at the meeting.  With all of this being new to me, I thought if you requested some service and it was rejected or not approved, a PWN was due.  Or did I make a technical error by not putting it in writing?