It could be a problem in the CO. I remember a number of years ago MTS lost part of Gateway (66x prefixes) for about two days. My parents were some of the down customers. Some sort of obscure switch glitch they needed somebody from Nortel to come in and fix.
I also remember we had a problem at work with no dial tone to one of our offices in North Transcona and it was tracked to the remote distribution hut located on Regent Ave by Club Regent. Took the best part of day to change out what ever needed to be done and restore service.
Well - I called for an update at 2pm today - seems they now think they need to send a tech instead. Nice that they cancelled my Friday afternoon appointment (after I waited for them). Now they gave me the 8am-5pm window on a Sunday.