An update on my FCC complaint against Boost Mobile:
02/21 - complaint filed
02/22 - FCC responded that they served the ticket on Boost mobile for its review and response.
02/23 - Sprint agent called and said they will unlock the phone within 72 hours. The agent said that "their system was showing that the phone is ineligible", but she confirmed that it actually is.
02/25 - Inserted a non-Sprint sim and confirmed that the phone is unlocked.
Glad it worked out.
Usually a government complaint gets things done a lot faster and better than continuously calling and speaking to clueless customer service reps.
They will drive you nuts with how incompetent they are.