YouTube locked my accounts and I can't cancel my subscription

Easy fix, wait for the next billing, contact the bank explaining what happened, and block that and future debits.

At least in Australia, this shouldn't be a problem.

I assume you have a consumer protection agency. Ping them.

Put it in plain words. "I have been paying... they made it impossible to access stuff I paid for and made it impossible to unsubscribe."

That's textbook fraud. They'll be fined and give you your money back.

I'd imagine if you have a card payment reverted to Google and they ban you in return, you're in a world of pain (that you are in the right probably doesn't matter).

I some countries, however, this may penalize you, credit score wise or whatever.

This option, in my opinion, should truly be the last resource, after exhausting (and documenting) every other route.

Very important: public routes, like Twitter Support, even better (make sure every step is traceable if the only option left is, indeed, blocking debts on your credit card).

I had a strange and similar interaction with Google recently. I was asked to do the Android developer verification, but then I missed a deadline at some point. Support said that I would need to create a new Google account for all of this. I said this was unacceptable as this was a Google account I had for nearly 25 years and I didn't want to create another. They said tough luck, go make the new account. Luckily, I had recently married and was making a new account for the name change. I tried to use that account, but it wanted a different phone number to use for verification, but I only have one number and you can't use Google voice numbers. I went back and told Google I cannot use the same phone number to verify and I'm not buying a burner phone to do this with. Then they just said "Ah, ok, we'll fix your original account then" and fixed the original account. This was literally a week of back and forth. Pointless waste of time.