Just brakes My life apparently means nothing Kissimmee Florida

I wil make this short and sweet.  my brakes were getting soft but no brake lights came on.  I went to just brakes. I was told both rear slynoids needed to be replaced. I completed the repair left the shop seven miles later my brakes went to the floor all indicator light came on and I went through a red light intersection. One hour later I had my master brake cyinder replaced and was told if the brake light came on and went off it just needed to have the fluid topped off.  One week later brake light on back to Just Brakes.  I was told nothing was wrong and asked if I had full insurance .  I was then told that brake system may have been contanimated but my insurance would cover this and the manager Dave would file the claim.  My Dodge Durango has less then one hundred thousand miles, I respectfully declined.  I was told to drive it a few days and bring it back if the lights came back on.  Two week later I almost did not avoid an accident while coming of the Florida Turn pike.  Too make this short as I can an claim was filed I told the adjusted the whole story. Nod produced my work receipts.  Dave the matcha nice told my adjuster he had never seen me before could not bring me up in the computer and provided my adjusted with a repair estimate of almost $3000.00 including parts that had been replaced two week earlier.  Outraged I contacted Dave he told me to just say I brought it in basically just lie!!!  I have called corporate offices three times only Dave called me back to say he could not believe I would call corporate.  My claim is of couse denied I have no vehicle I cant get an answer on who will fix this. The only estimate I have is from the insurance adjuster clearly stating 95% ContanimTion with power stering fluid.   Seeking a class action suit I need an attorney hopeless and stranded. Happy holidays to Dave.  Mine are ruined