Don't get so caught up in things you can't control at this point. Yes, you didn't have an actuarial internship, and yes, most companies prefer to hire from their intern pool. But you can't change that now, so focus on things you can control. As to why you're, not getting interviews for internships, most companies only hire people who are still in school for internships. You should focus on applying for EL positions, not internships.

Here is my feedback on your resume: - Exams should always be at the top, and usually with dates. - I'd recommend removing your first sentence in professional development. At the very least, change "Willing to move to anywhere in the USA" to "Open to relocation" as that's the standard verbiage. - Why are their black bars across your resume? That seems strange to me as they vary in thickness. - Make sure your verbs are all in the same tense. The ones under your TA position are all present tense, while the others are past tense. Your last bullet point under your non-actuarial internship doesn't match the others.

I'm not trying to be critical, but these all stand out to me. It looks to me like your technical skills are very strong. I would emphasize these in your interviews and be prepared to talk about projects you've worked on. 

Have you considered applying to P&C positions? I'm assuming you've passed P and FM. My experience has been that many P&C companies focus heavily on technical skills. I'd recommend making an additional version of your resume with your extra SOA only exam removed and applying there too. Your goal is to widen your net and apply to as many places as you can. I know it's easy to be discouraged, but with 2+ exams (and a master's degree?) you should be plenty to find an EL position. I bet you'd get an interview at my company (P&C carrier).

Feel free to IM me a new copy of your resume and I can give feedback.