My unpaid salary

Hi hellopeter I was working for Cross Trainer Northgate for one year as a sales Assistant I was framed and suspended from the Campany on the 13th of October 2018 and I attended my hearing 15th of October 2018 they told me that I was guilty without investigating and I was dismissed and when I called them month end to ask about my salary the money that I had worked for they told me that I was under investigation but I couldn't and still doesn't understand how can I be under investigation when am no longer part of the Campany. And now everytime I call them to ask what is going on they refuse to answer me they tell me the person who is suppose to be helping me is busy and this people is always busy when it comes to my case. My managers name was Zweli Didi and my erea manager was Alpheus Dlamini and the person who is responsible for my case is Sharon Samantha Spillay. The head office of Cross trainer is in Sandton City 6th floor office towers 2196.