Was I wrongfully terminated

Unless the company was really trying to terminate you because of discrimination (race, age, national origin, etc), or retaliation for certain types of complaints you have made (such as unethical or illegal acts, as an example) your legal rights may be limited. But, if you can clearly prove that you were told to leave work by one supervisor, and then another supervisor terminated you for leaving your job without authorization (job abandonment), you may have a good argument to ask the company to rehire you or perhaps sue the first supervisor who told you to go home. Contact an attorney to further review your options