If you are renting the basement, many city bylaws will state that it legally needs to have a separate (B) address with a safe fire exit. If you have a "B" appended to the mail you receive at your address the landlord is doing it right.. this means you can get your own Telus hooked up downstairs.
If you've got access to the modem itself, resetting it will also reset all of the login information. Not sure how stable your rental agreement is if you want to start messing around with your landlords stuff... If there are outages due to power offer to put a cheap battery backup for them, as they would be experiencing them as well.
Unfortunately as long as someone else is administering your Internet setup you are at the mercy of both their knowledge and generosity.