Unauthorized Charge for a CANCELED account

IMDb took $16.99 when I had already canceled my account. I had my Cash App card attached to my IMDb Pro account, thus having to play Russian roulette and keep it disabled because IMDb kept trying to get money out for an already CANCELED account. Suffice it to say, I forgot to disable my card today and IMDb finally snatched the money from my card. I'm fuming as that money is to get some much needed items for my mother who's in a nursing home. This is the last thing I need right now, and all I'll be offered for this huge inconvenience is a refund which will probably take X amount of business days, if I get a refund at all. I have any/all screenshots you need for me to prove that I had canceled my account and yet, billing persisted on trying to take $16.99 for something I no longer want to subscribe to.