Apparently "within 48 hours" doesn't mean within 48 hours of when they tell me 48 hours, but within 48 hours of when the report actually goes to Construction and Maintenance, or the Ottawa section thereof. Apparently that generally doesn't happen until the next day. (Called 1:45pm.)
And, it is 48 "business" hours. Which means Sat/Sun hours don't count.
Hopefully I'll hear something before noon Monday.
For my future reference:
account # 03 65 39 26303 4
case # 101977301
Enbridge customer service web page:
https://www.enbridgegas.com/homes/customer-service/contact-customer-service/Phone number: 1-877-362-7434