How can I get my delayed I-526 processed despite USCIS mistakes?

I currently reside in California and filed a direct EB-5 (I-526 standalone) petition on July 18, 2023. Although the filing fee was deposited immediately, I did not receive a receipt notice until April 7, 2025, nearly two years later. The receipt confirms the original filing date of July 2023. Since then, my I-526 remains pending with no Requests for Evidence or updates from USCIS. My Case priority date was set for March 8 2026 and it is currently past due. I have reached out to USCIS twice since then, and they have told me there are no updates on my case.

At the time of the initial filing in July 2023, I also submitted Form I-485 and Form I-765 concurrently (C9 category). However, because USCIS failed to properly register my I-526 in their system, both applications were denied in error without any formal denial notices. I only discovered this after multiple follow-ups with USCIS. I re-filed both the I-485 and I-765 on July 14, 2025, and they were accepted. I then submitted a request for expedited review of the I-765 on August 20, 2025. On September 27, 2025, USCIS confirmed my case met expedite criteria and was forwarded to the service center with a referral ID, with a promised response within 10–15 days. As of now, there has been no follow-up, and USCIS indicates the request is still open but not yet reviewed.

This is a direct EB-5 investment in Southern California (TEA – high-unemployment area). My business is fully operational, employs 11 full-time U.S. workers, and generates over $5 million in annual revenue. Would a judicial remedy be appropriate at this stage, or are there any other alternatives I should consider?