Random DVR recordings, all kids shows - but no kids live here

What's going on? When I log in from time to time I'll find a bunch of DVR recordings, always of kid shows. Thing is, we don't have kids here (not for a very, very long time.) I'd sure like to find out how it's happening so I can stop it but... 

I've tried many ways of asking the terrible Xfinity assistant chatbot, which when it doesn't understand just flips you off and snickers to itself about cable tv being a regulatory monopoly...

So, anyone here got any ideas?