PSA Airlines reviews

This company terminated my employment while I was ill, (with a doctor's excuse), and did not give me a warning letter or anything. When I tried to contact the company, and the union, I got no response to phone calls or emails. I still have not received my last paycheck. I was told to send the manual, etc back to the company, but nobody will return my phone calls as to where to mail the items. I paid my union dues, and I expected some representation, however, I am not getting any return phone calls, nor correspondence to my inquiries.