did you pay for the account you had when working for that company? if so, contact the plan administrator and see what they can do to "move" that account to a different adobe id (ie, email) that you control or change that account so you can control it.
if the company paid for that account they own it create a new adobe id (with different email address you control) and use that new adobe id for your personal account.
if you need help with the adobe end of it, contact adobe support. there are 3 ways to contact adobe; chat, phone and twitter:
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. ie, double check for an employee badge if contacted in the forums and look for an adobe.com domain in the email address if you click reply to an email. then check again and be very suspicious. any other method of contacting (or offering to contact you) is almost certainly a scam, https://community.adobe.com/t5/using-the-community-discussions/staying-safe-in-the-adobe-support-com...