Kick up a stink. However, if your Pl Cmd/OC can't be arsed to write your CR, then even by kicking up a fuss, He/She probably won't do you any justice anyway. I dare say that the Golden Balls in your unit will have had their CR written and sat on the CO's desk for several months.
Different kettle of fish when it comes to their(Officers) OJar's though. But then again, most of those feckers know to the date when they are going to get their next pip.
Have you had a MYAR? Looks like you should redress. However speak to your Desk Officer at the APC or one of the staff as the ywill be chasing up missing reports until the day of the board. (Phone numbers on ArmyNet). If your report does not make it to the APC on time you could still be run to a sweep up board. Sounds like Adjt and RAOWO need a rocket too! PM if you want more.
I presume that your C/R's are now done by SJAR on JPA? If so, you need to ensure that you have filled in your bits in good time. Your unit HR staff should then be chasing the 1st RO's etc. If not, badger your SJAR Clerk. The ONLY good thing about JPA is that it is quite clear to everyone in the correct chain, where your report is, and who is delaying it!