They'll invoice you but don't actually pay. They aren't going to take you to court over a $50/month subscription; the easier route for them is to just disable your account, which is what you wanted anyway.

Never give them your actual residential address (they don't need to know it), birth day, or SSN, or be tricked into giving them such. If they ask on any customer service chat or phone, the answer is they don't need to know it.

Without these things they can't exactly put it on your credit report, either. They may send it to collectors, but don't talk to them. Let them cry. They still won't serve you a court summons over $50.

Keep businesses in check from this money-grabbing behavior. Any kind of subscription should be easily cancellable.

What you are describing is fraud.