I was dismissed because of attitude, my manager and I did have a disagreement on the phone which led to an exchange of works, which I immediately said I was in the wrong for, a month later while being laid off after completing a 1200 hour year they call me without written or verbal warning and say that I’m not returning because of my attitude, it is unionized but are they able to do this , the same manager has called me many times antagonizing me telling me to work and really only singled me out and says that I have to go back to work when everyone else was sitting waiting for the other contractors to complete, I only started having attitude towards the company after so many unfulfilled promises saying I would get an upgraded license, saying I would have work for the rest of my life,

I don’t know what to do, should I take it to the ministry