Hello you have alot of information that clearly spells out that you may have an employment action, however will you be able to prove the reason that you were terminated.
Recognize your state has a doctrine that allows for an employer to terminate an employee for any reason and at anytime as long as the reason is not discriminatory. This is called At Will Employment. Now , if you have documentation that would support the information that you noted you may be able to support such or if you feel you were singled out because of a protective class status.
Employment attorneys will take cases on contingency fee, but these cases are very clear cut. You may want to consider meeting with an employment attorney to review your documents, your information and allow for evaluation to determine if you have a cause of action. Ensure you retain an employment attorney that clearly understand the sale environment and how the sales and commission plans work. I hope this has helped if so click accept.
Lawyer
Have 30 years experience in labor/employment law.