Taylor Swift is being sued by a Canadian concert company for keeping $2.5 million she was paid to play a concert...that was cancelled! They're suing for $1.8 million, which is the amount that was shelled out in refunds.

The show was the "Capital Hoedown" and it was supposed to happen last August in Ottawa, Canada.

Taylor's reps are sounding like they're not ready to hand over the money any time soon. They claim that their deal was not with the ticket company, so Taylor is not responsible for the refunds. They also claim that they have yet to see the lawsuit.

Again, Taylor would still stand to rake in $700,000, even if she returns the $1.8 million.