2 weeks ago was terminated from my job. I was accused for suppose lying on my application about a conviction when I was 17 I'm 27 now. The security man accused and insisted that I had a conviction. I replied by saying that I didn't know I had a conviction thought it was dismissed. He said he would have to report to HR. Work for a week and was terminated. So I took upon myself to go to the firm that represented me on the case he look up my record and said there was never no conviction it was dismissed they had gave me 6 month probation which I stayed out of trouble and was dismissed. How should I approach this to them? On the application It ask if ever convicted which I said no don't know what I did wrong.