I went to national education center in san Bernardino California. I am trying to get my transcript or proof of certificate of completion of course

Here's what I found. I'm not sure if it the same one, but the names match. It's worth a try.
National Education Center
NEC Record Retention
c/o Cengage Learning
10650 Toebben Dr
Independence, KY 41051
Ms. Vicky McKiddy
859-525-5351

Or what about this? (scroll down for the San Bernadino, CA school) --

Bryman College - Wikipedia, the free encyclopedia

If it is accredited the Department of Education of that State often has the transcripts