Rule one, don't quit. Rule two, don't lose your calm composure.
I wasn't sure, did you try applying for TAG as a line service guy? Talk with HR, ask what their advice it for bettering yourself and applying at a later date once you've done what they suggest...
I'd say you might want to act as though flying is not on your radar, and that fueling is your life ambition. I've seen many guys use this as a way to meet crews.
- Avoid the thoughts of buying a rating, it lacks good form...
Best of luck!
FR