Forgot to cancel free trial

Hello!

I started a free trial on Adobe in early October. It's only today that I've realised I forgot to cancel my subscription. I've just cancelled it today on Google Play.

I didn't have any money on my card at that time, and I don't have any money now. I wonder if they will take the amount due when I will have cash on my card? 

I tried talking with customer support and it says: "To continue with agent assistance, please sign in with an active plan. I found no record of an active plan linked to (my @8395988)". 

Thank you for your help!