Could I potentially be on an employment blacklist?

When I was a teenager I worked 3 retail jobs and quit without giving a full 2 week notice. This was mainly because I freaked out from too much stress when my job got rough and the only thing I thought I could do was “run away” from the problem.

Anyway, that was over 4–6 years ago. I’ve worked other jobs, mainly school jobs that didn’t require a resume or even a real application, but now that I’m trying to get a job off campus I’m noticing some odd things.

For example: I applied for a basic cashiering job at Toys R Us last year, and I never got a call back. Then my younger sister and one of her friends applied 2 weeks later and they both got jobs there instantly. (Also, I had cashiering experience, and they didn’t)

Could I be on a blacklist, or is there something else that could have caused this?