Got laid off due to lack of work, a week later got a letter in the mail saying I was dismissed and won't be called back. Have called HR to talk about it and no calls back, they also wrote on my ROE that my vacation pay was basically severance pay, so now my EI is delayed for a month

Thanks for writing to us. You are almost certainly owed reasonable notice of your termination or payment in lieu thereof. Vacation pay is an entirely separate issue. To find out how much you could be owed, use our Severance Calculator (linked at the top of the page) and call us at the number below to discuss your entitlements in further detail with a lawyer. We would be pleased to assist you however we can.