Can I sue Workman's Comp for closing my case without ever contacting me, resulting in an unrepairable injury?

Short version: I was I injured at work in December, 2110. I contacted my boss and told him I thought I could finish the day. I have always been the type to heal quickly so again, I told my boss I work continue to work through the pain and see if it would get better; he said Okay. About four to six weeks later it was still not getting better. I asked my boss about seeing a doctor, he said, Okay. At the Express Care they told me that they would send the Medical report to Workman's Comp, and that I should contact them. I called Workman's Comp and told them what the Express Care told me. I would have to see an Orthopedic doctor, possibly need an MRI, and surgery. The Workman's Comp rep asked if I was still working, I said, yes, but it doesn't feel good at all. She then told me, don’t do anything else (treatment wise) until you hear from me, as soon as I get your Medical report, I'll contact you. Just do t do anything until you hear from me. I never heard from her. About a month later I called her office several times leaving messages, getting no response. I stopped trying. I continued working through the pain for two years, during which time I continued to tell my boss about my continual pain. Then finally in February of 2013 the pain was so great I told my boss again that I really needed to have my injury looked at. Workman's Comp told me they closed my case due to lack of contact between us, but they would now authorize a "one time" visit to the Orthopedic doctor. After an MRI, and a follow-up visit to my doctor, I was informed that three of the four tendons and muscles of my right rotator cuff were completely torn from the hummers. Because it has taken me two years to be diagnosed, the injury is now unrepeatable.