I asked my supervisor if I could take a personal day due to a lot of stress, he told me that his problems were worse and not to come back. I spoke with some one higher up and they decided to fire me over asking for a personal day, is this wrongful dismissal

Travis, this is certainly a wrongful dismissal and likely a violation of applicable human rights legislation. You are likely entitled to damages for wrongful dismissal and for breaches of your human rights. Please contact our firm to discuss your matter further and determine how we can assist you.