LIGHTROOM APP

if you do still need/try to contact support, make sure you're aware of the cancellation terms by selecting your plan type (at the top of the page here), https://helpx.adobe.com/manage-account/using/creative-cloud-subscription-terms.html

for info on how to cancel your subscription, this page describes the few steps involved, https://helpx.adobe.com/manage-account/using/cancel-subscription.html

if you want to cancel but are unable to follow the steps described in the "how to cancel page", contact adobe support.

there are 2 ways to contact adobe; chat and twitter (now x):

chat:
use a browser that allows popups and cookies, and click here, https://helpx.adobe.com/contact.html?rghtup=autoOpen
in the chat field (lower right), type AGENT
be patient, it can take quite a while to reach a human.

twitter/x:
tweet @AdobeCare

p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative.

Hey, @Adrian35810145kfc3. Welcome to the Lightroom Community. I've reviewed the account you signed in to the community with; I found a closed support case & no active subscription. 

This is a user-to-user support forum. Here is a link to contact our team via live chat for an account or payments-related issues:  https://adobe.ly/3VfUwEJ