All administrative agencies have a procedure for filing a complaint. It may require a form to be submitted, or there may be some sort of hearing board to contact. The agency's website should have information in the procedure. In most cases you cannot go to court as a first step, but must first follow the proper administrative procedure.
You get a lawyer, like me, and u and the lawyer will write the compliant together. In the first paragraph it states your name and how you plan on suing. Each following paragraph is a different reason why you are deciding to result to litigation against the company. You will send it to the company and they will get a lawyer who will reply to your complaint and then you will select a court date. Good luck!!