How do I go by getting my back pay do I just ask them when I get like what I have to do

I found a way to solve reaching California Unemployment representatives, watch this: https://www.youtube.com/watch?v=kVZy967k740

To all those having trouble reaching a human at California Unemployment. I just ran across this video that gave me a shortcut to reach a human. Hope it helps! https://youtu.be/Ize0EkN4HDI