I need a lawyer to help file a case against DEPARTMENT of REHABILITATION in ILLINOIS for wrongful termination

Too few details exist. Hire an attorney for an in person meeting to fill in the missing detial

If you have the right to appeal this through either a union or the Illinois Civil Service Commission, then you should definitely do this. At the hearing, you will need to identify who told you not to call in and the circumstances of why that person told you not to call in. Ideally, you will also want that person to testify to confirm that he/she did in fact tell you there was no need to call in. If you have no right to any hearing nor union protection, then your options are very limited here. You would need to meet with an employment law attorney to see if there is perhaps some type of illegal discrimination that led to your termination.