This letter, sent after getting input from your attorney, can be used as a template when a company says you have resigned when in fact you did not.
Dear Mr./Ms. Bossname,
I am not sure how this miscommunication unfolded, but I most certainly did not resign my position. I did not give notice, I did not submit a letter of resignation, and I did not tell anybody that I wish to leave the company.
Attached please find copies of emails between myself and human resources regarding the issues that I outlined. While it is true that I filed a grievance, and have several issues with how the company is being run, I remain dedicated to the company and optimistic for a resolution.
I have also written to HR regarding this matter. I have not received any paperwork regarding COBRA or other benefits, a reason for layoff or termination, unemployment, future references, or future pay. I am requesting a formal meeting on this issue at a time that works for both me and my attorney.