@Josh
Do as maverick03 instructed and then make a copy of the same written request ( preferably typed ) and get a received stamp on it . Try and get two copies with the received stamp ( one copy for your keeping )
I am assuming that they will forward the letter to the DGCA
While submitting your application for CPL give the copy of the written request with the received stamp on it . That document is more than acceptable to the DGCA