If your credit was frozen when the inquiries were made, you can legally have them dropped from your report. You will need to contact whatever bureau is reporting these inquiries and ask them how this happened when your credit was frozen. I had all three of mine frozen as well. I forgot to unlock them when I was applying for a mortgage pre-approval and it stopped them. It's odd that this is still happening to you.
Thank you for your update. I have contacted the offending Credit Reporting Agency by certified return receipt letter. Waiting for their "We have 30 days to respond" delay. I also contacted the Federal Trade Commission (in writing.) FTC said to let them know if the unauthorized enquiry is not removed or if my score is not corrected.