Claiming a stimulus payment (if you didn't get it) was only for the 3 federal Stimulus payments on your 2020 and 2021 returns. Nothing you can get for 2022 federal or the CA Middle Class Tax refund. You have to contract California or the Money Card.
See this Sacramento KCRA channel 3 report on how to get though to a real person
https://www.kcra.com/article/california-middle-class-tax-refund-customer-support-line-tips-inflation...
