young man...grow up.
It is 100% up to them - whether they accept your request for
early enlistment. That is why it is called an application - not a
demand.
Whatever someone tells you verbally, might be just one person's
opinion - in any case he/she told you to go back and wait, didn't
promise anything. Even if they did, it is the person's personal
comment - its not an obligation for SAF to follow.
Once again - grow up.
You can't demand them to take you early - if for whatever reason
they say no. You're not the boss. Neither is your MP their boss.
You can ask your MP, maybe he/she will write letter just to be nice
- but the SAF is not obligated to accept your letters, no matter
who wrote it.
Grow up. You're not the boss !