I just spent almost half an hour on the phone with my credit card company. I noticed that about $600 worth of "Canadian Tire Money" was missing from my account. Canadian Tire money is a rewards thingee and I can spend it at Canadian Tire. Canadian Tire is sort a hardware department store with an automotive section.
Anyhoo, I was checking my online CC balance and noticed that the rewards total was at $31 something, not the expected $600+, so I phoned. Yup, someone managed to redeem over $600 at a Canadian Tire store that isn't very close by. There will be an investigation, which may involve the police. They promised to give us the back the amount that was used for that purchase, whatever happens with the investigation. At least we don't need new credit card numbers. They will just change the rewards program number. Colour me relieved.