Cancelled annual plan twice, yet have continued to be charged.

I have had an annual Creative Cloud account for many years with no issues, and have quite enjoyed it. Back in the beginning of September of this year, I cancelled my plan online since I was paying for a separate student plan through my school. I recieved a confirmation email immediately after cancelling, as well as another email a few days later informing me my membership ended. Yet, a month later in October my account was billed for another month of my plan, and my account showed that I still had the plan. I tried calling the support phone number to ask why this happened, and they just kept telling me that I still had a plan open on my account but I could cancel it if I want. I ended up just cancelling it all over again over the phone and they promised me I wouldn't get charged again. I once again recieved 2 emails confirming my cancellation and informing me my membership has ended. I have just been billed again yesterday for the same exact plan, and my account still showed the plan being active. I just cancelled this same plan for a 3rd time 30 minutes ago and have recieved my confirmation of cancellation. I have been billed for an extra $238 after cancelling my plan numerous times. Is there an email I can contact so I can forward all my cancellation emails, since when I tried over the phone they just kept telling me that all they saw on their end was my plan still active? How can I make sure my plan stays cancelled so I don't get billed for another month, as well as how can I get a refund for the $238 that Adobe has stolen from me?