How can I 100% cancel my millions card and account?

I got the card months ago and it was cool at first but then my transactions weren’t showing when they were supposed to, I didn’t get tickets and spins I should have, and the straw that broke the camels back was I got a notification from millions saying I won $15 on Amazon. I clicked the notification and the app opened normally like I didn’t just click that. Done with the weird and scammy shenanigans.

Other than freezing the card and removing the funding sources, are there any other things I should disable or do?