Hi @Exuberant_introvertedcf ,
Thanks for reaching out, and sorry for the trouble this has caused.
Good news on the main thing: the Acrobat Pro plan on your account is already cancelled, so there's nothing further you need to do to cancel it and no new charges will be set up going forward.
The payment message you're seeing usually relates to a charge from the current or final billing period rather than anything ongoing. The clearest way to check where things stand is to sign in at account.adobe.com and open Plans and payment, your plan status and any invoice details will show there, so you can see exactly what, if anything, is still outstanding.
If you spot a charge there you'd like us to look into, reply here and we'll help you get it sorted.
Thanks,
^AV