@kathyc2This is a known problem with the CA FTB. They don't get the 592Bs electronically, so they can't match the withholding to the return and it kicks it out with a balance due notice. A lot of times, the taxpayer is from out of state and challenging the FTB will cost more than the amount of the tax bill, so they just pay the bill.
If you want to get the money back, you have to mail a letter to the FTB with all the documentation and wait for them to read the letter, respond to the letter, and then issue the refund. Takes time.
Every morning when I wake up, I thank God that I did not wake up in California.
Tom
Longview, TX