Dealing with bad contractor / cracked cement

[J. Erickson]

I am beside myself.  I bought my first cabin Fall 2017 in Northern WI to rehab with intention of using as vacation rental.  In Spring 2018, I had standing water in the basement.  I hired a company to install drain tile around perimeter.  After installation, I was unhappy with the look of the floor so I asked what could be done to fix.  Company suggested a 2" skim coat over existing  floor.  Soon after it started to crack over entire floor.  Company claims this is normal and feel joint filler is the answer.  I have had several companies look at my pics.  They all say this is failed workmanship and needs to be ripped out.  It will cost more to fix than I owe (put half down). Unfortunately, no one will take job to replace as no one wants to give report for small claims case.  Contractor now threatening lien.  When I asked why there are no control joints, they told me that if they had followed Redi Mix guy's instructions, they would have had to cut control joints every four feet.  They want the money but I still need a decent floor.  Could I get some input from some of you with concrete experience or dealing with companies like this?  I do not feel that this is acceptable.