What kind of experience, if any, would typicaly be enough to land you a job or interview over the phone or by email?
Welcome to the wonderful world of aviation....
People....your first job will be the hardest to get. You need the hours to get the work and you need the work to get the hours.
You have a much better chance of getting work if you turn up in person rather than have your resume circularly filed.
At least arrange an interview with a group of operators and schedule to catch a burner up to DN, hire something useful and plan a route over a few days that will get you in front of as many potential employers as possible.
May not be the ideal plan but you gotta start somewhere.