I used to look for a job in FASCO, and I didn't pay any fees to FASCO. The key is to see if you can be hired through the recruitment of FASCO representative office. The so-called interpersonal relationship does not play a big role in the process of finding a job. Your ability is the most important.
I'm curious why you are only interested in ground handling, because airlines have so many jobs. Ground operation is very difficult. Flights are delayed or cancelled, overtime is not counted, and angry passengers are faced. I suggest you know more about this industry before you really enter it.
Finally, I wish you can seize the opportunity.