keep it up
It's very normal to feel like every resume you send is being thrown into a circular file, cause they probably are. These opperators are receiving so many of these things that you have to do more than just send a resume...especially if you've got minimum hours (like myself). If it's a job you qualify for and truely want, call call call, visit, call, etc... The calling and visiting shows that you are very interested and really want the job, if you don't annoy the piss out of them, they'll take it as drive and motivation. The resumes will just keep going in the pile untill they are desparate, then the "Best" resume comes out, not yours. Be present, make sure they know you want it bad. This approach is how I was told by some friends (who were hired) and used my me (hired as well). Good Luck and keep it up.