yeah... if there’s no pending charge, not even for $1 (which they seem to put through as a tester), I’d say it’s unlikely the cancellation has been processed. Many banks have problems with transactions from columbia... they don’t even reach the bank’s systems. I read an explanation for that, I think here on FT, something about the CC company doing something at the point of sale blocking the card before it even gets through.

You can wait 24 hours, see if anything materialises to save yourself another call. Normally however when the CC fails at the time the agent tells you to try again (and again).