Hbo Max Has Charged Me ~$1,000 Over Years For A Subscription I Don't Have

I have a Chase credit card that I rarely use. The account is set to auto-pay and usually, the only charge each month is a single subscription for which that card is set up as the payment method.

I recently logged into my Chase account and noticed that I am being, and have been for years, charged $16.99 a month for an HBO Max account. This totals in the ballpark of $1,000. Here's a brief summary of what's happened so far.

Background:

• I had been subscribed to HBO Max years ago, but I was pretty certain I had canceled that subscription around 2020
• Still not wanting an HBO Max subscription, I logged onto my account with the intention of canceling it
• As I had originally expected, my account did not have an active subscription
• I then attempted to log in with all other email addresses I have, but none of them were associated with HBO accounts

What I've tried: I contacted HBO support who attempted to locate the account. I shared:

• All known email addresses
• The account information of the card being charged
• CC statements showing the charge on my account

HBO support was unable to locate any active account associated with that payment information and then basically washed their hands of the matter. They instructed me to dispute the charge with my financial institution and have not given any guidance on how to move forward with HBO.

This doesn't feel right. Given the fact that they can't locate the account, it seems to me that they have been erroneously charging me for an account I don't have for years. I would certainly like that money returned to me, and it doesn't feel like my financial institution should be responsible for this.

Granted I should have paid closer attention to my financial accounts, but I was being charged for a service that I didn't purchase and that was never provided.

My question: What course of action would give me the best chance of getting all, or at least some, of my money back? Should I pursue this with HBO further, file with a consumer protection agency, or just dispute with Chase?