Looks like we're all in name check hell. There's an FBI phone number though that you can call to check if they sent the name check back to USCIS. If I don't get any updates in 30 days, I'm going to call them.
Most likely, the phone number you are referring to is for FP status, not name check. AFAIK, the only way to check name check status is to use infopass, go to your local office and ask a USCIS officer in person, or to inquire through congressman/senator.