Why would CBS not care? It's their reputation on the line, if they get involved in something that turns out to be a scam, not to mention that if it's widely known that CBS sanctioned a sham event, people are less likely to attend other events they're involved in, so they get less money.
In any case - Excel don't have data on events past September on their website but you could always try emailing them to get confirmation it's actually there. These centres all love promoting their events!