I'm also Canadian and I do get random calls in Mandarin sometimes. I didn't know what they saying so I just hung up, but I guess it's likely they were scam calls along these lines.

Immediately thought of this - I guess this person is British or from another region where Weetabix is a normal thing

I was just thinking the other day how unhealthy it is to think that if someone isn't terminally online they're lame or dumbasses