Ancestry's product is good. I've joined and rejoined many times over the years. My complaint is about their subscriptions (specifically canceling), their website account UI, and their customer service.
I joined with a six-month membership, which will soon be expiring. My billing is monthly, so I understand that I can't cancel in advance, but I wanted to make sure my membership would not auto-renew. Apparently, that is not possible until the last payment clears. The user interface did not have that option, and their help articles weren't helpful. When I tried to cancel a week ago, it gave me the option to cancel for a $25 fee, so I waited. My monthly payment cleared this morning, so I tried again. This time it didn't even give me the option to cancel – step one it did, but then I needed to pick one of three choices, and none of them were "cancel".
On the positive side, I used their online AI support tool, asked for a human, and got one – maybe. While I think it was a human, I'm not sure because their messages were very abrupt. They canceled my membership a month early with no questions and no explanation – and no acknowledgement of my "thank you" to them.
If it was a person, either they are poorly trained, or stressed and overworked. Either way, this is their management's responsibility.