Sidewalk Lien

To make a long story short, 3 years ago I had my sidewalk redone as we received a notice form the Dept of Transportation that it was damaged. After it was done and inspected, the DOT wouldnt sign off as the didnt do the expansion joints correctly and now I have a lien on my property. Can anybody recommend a company that can just cut the expansion joints and deal with the DOT to get the violation/lien removed? Any help would be greatly appreciated! Thanks