How to prove duress, economic duress, undue influence

My attorney had me sign change attorney form the day I hired him in case I didn't pay him his entire retainer fee before trial. Is that considered duress, economic duress, or undue influence. I explained to him I didn't have the money during our initial meeting but I will be sure to use every resource to pay him. I also explained how other attorneys took my money and didn't provide me with the information he was giving me along with the best options and alternative to fight my case. I felt confident that he knew what to do. He sent me a email stateing that I was not cooperative with providing documents in a timely fashion which I thought I was I sent seversl emails then my phone and Internet service was turned off. He filed papers to come off the case in put me as pro se with only 8 days for court. What to do