The title insurance company agent made an error and has an obligation to rectify it at no expense to you.
I suggest that you send a letter to your mortgage lender - the most recent refinance lender. Point out the error. The mortgage lender has a loan policy which insures that they have a first lien on the insured property. They can make the claim. Send this letter CERTIFIED mail and copy the title insurance agent, the state insurance department and Consumer Financial Protection Bureau. This will get the attention of everyone and move a resolution forward.
Good luck and thanks for reading the blog!