Irritated and not sure where to go from here!

So i was terminated from my position as shift manager at the local fast food here for a simple mistake and have tons of questions what to do. In the handbook it says that if a manager makes a mistake then they could be put on a probatiin period to help them with goals to help them succeed but i was not offered that. Plus before being terminated i was entitled to 5 days vacation pay but now they are stating that since i was terminated i am no longer entitled to that although i worked the full year for that vacation pay and now their not trying to give it to me and when i ask where in the handbook it stated this all they say is that it does not state it and its up to the owners discretion so what are handbooks for if they dont put these things in their???

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