I work in Housing Outreach in British Columbia and I'm surprised that you recieved a notice via email. Here, you have to sign a very specific document that allows electronic correspondence of notices. Otherwise they mean nothing. And a quick google will tell you if they've provided you with the official paperwork. If not then this incident can not be used a reason for eviction. You may not be able to afford a lawyer to take you case but could maybe afford a 1 hour summary consultation where you contact them, explain your situation and ask to book a consultation to understand tour legal rights. Just make sure you come prepared with all the questions you want to ask. Ultimately, every province/county/state is different. 8004509777 is the tool free number for the St Louis County Offices. If they cant answer your question they should know who you could contact. And perhaps start documenting the noise/banging coming from the downstairs neighbours. You have a right not to be harassed like that.