Valuation Vision BPO Company DOES NOT PAY FOR WORK COMPLETED FOR THEM Carlsbad CA CA

I was hired by this company as an Independent Contractor because I am a Realtor.  This company provides their clients with BPOs (Broker Price Opinion) and CMAs (Comparative Market Analysis) of homes that are going into or have gone into Foreclosure for the BPO and possibly going to be sold (CMA).  These jobs require a licensed real estate agent to complete by law.  This company is not licensed real estate agents and so they hire ones to complete the work for them.  They pay them far less than a real estate agent would normally get for this type of work.   They are hired by banks and other agencies who need cheaper and faster means of getting an Appraisal.  BUT in 2014 they stopped paying.  

I have had 5 telephone conversations with them where they stated that they were "behind" in paying but should be caught up in 2 weeks.  I was promised this several times.  Obviously, they do not plan to pay me at all.  The contract that they required me to sign states that they pay in net 30 days.  They owe me from February and we are now in July!  

I was shocked to see so many complaints against them.