They sent me an email in response to my inquiry that my case is approved

According to U.S. Citizenship and Immigration Services (USCIS) records, this petition/application was approved and it has been sent to production. Your case will be processed in order based on the approval date. If you do not receive the document within 30 days please contact us again.

But in my follow up calls I am informed that the case is pending assignment to an officer who will send it to production. I have contacted all agencies that can help but i am waiting.