@Patrick: Koodo won't refund you for data overages. Your best bet would be to add data add-ons in the meantime. Rogers will most likely only credit you your downtime.
If you need more data, you can grab data only plans (tablet plans), $15 for 3 GB with Fido and tether off a spare phone.
If you're working from home and not self-employed, you may be able to expense the data charges with your employer.