Unable to cancel hulu

The spectrum email I received talked about getting free streaming apps. I signed up for Hulu  I was told by representative that if I didn’t transfer everything over to spectrum I would Be charged for Hulu after 30 days. I have tried numerous ways to cancel my Hulu subscription. I tried on the Cox website. I tried on the spectrum website. I tried on the Hulu app. I am unable to cancel it. Can anybody help me?