Contact - email

What was the address it came from, and when you did the Reply, what address did it try to go to? And what do you see when you turn on full headers?

It sounds suspiciously like it did not come from Adobe, but we can't tell for certain from what you've told us. Send the email to: phishing@adobe.com. If you gave credit card information, cancel the card. If you gave other information that could be used for identity theft, find out what you need to do to protect yourself.

https://helpx.adobe.com/security/alertus.html

https://blogs.adobe.com/security/tag/phishing

Do not reply to PMs from scammers who might send offers of "help" through this forum. Email and Forums are two favorite ways for them to work. Adobe Staff has a red badge, the word "employee", and an adobe.com address.

~ Jane

Adobe do not offer support by email. 

Log into the main Adobe website with the Adobe ID, Email Address and Password, you used to purchase your subscription and then go to Manage your Account and you will find other links to change the payment method.

Google search for topic.

https://www.google.com/search?q=change+Adobe+subscription+payment+method&oq=change+Adobe+subscription+payment+method&aqs=chrome..69i57.13490j0j7&sourceid=chrome&ie=UTF-8

Actual Adobe Help page.

https://helpx.adobe.com/manage-account/using/switch-between-credit-card-and-paypal.html

https://helpx.adobe.com/manage-account/using/update-billing-information.html