Redeemed the wrong Minecraft product

Hello, Ping. I’m Arturo, a community user like you, and I’ll be glad to assist with your inquiry today.

I'm sorry to hear that you redeemed the wrong Minecraft product on your account.

IMPORTANT: Refrain from sharing personal information, including email addresses, gamertags, phone numbers, the code itself, etc.

As community users like you, we are not able to enter or check information, and everything we comment can be seen by anyone on the internet. Doing so may expose your data.

That being said, I regret to inform you that once you redeem a code, it is not possible to undo this action, request a refund, or exchange the content you redeemed for a different one. Therefore, it's not possible to do what you're asking for.

I know this is not the kind of answer you were expecting, but your kindness and understanding are appreciated.

Regards,

Arturo.

I would call the support number and ask them whats going on

If it was fully cancelled, you'd want to contact support to see if there is anything they can do.
http://support.xbox.com/contact-us

If it was set to run out at the end of September and you had just turned off auto-renewal then the code you entered would have just been added onto what you still had and converted to Ultimate. When you redeemed the code it would have had a message warning
you of this before completing the transaction. There would be no way to revert it in that case.

All my subscriptions were cancelled. The ultimate game pass as well. It would have ended somewhere around late September. But even if it wasn't cancelled, how am I supposed to know? It's not on the card I purchased, and I didn't get any notice when I redeemed
the code :s

Had you previously cancelled Ultimate after you tried it out? If you still had the Ultimate subscription running, any prepaid codes you add would be converted to Ultimate as well.