Duplicate Plan - Not Canceled Correctly

I had two annual Adobe InDesign subscriptions on my individual account. This was probably my mistake.

When I tried to cancel one of the plans through the online interface, it did not cancel. So I used the chat bot to cancel the duplicate plan today. I reached a tech support agent ("Madhu") and  asked him to cancel the plan that was set to bill on April 23, 2022. I wanted to keep the one set to bill on August 1, 2022.

The tech support person cancelled *both* plans and reset my billing date to today, April 18, 2022. 

This is wrong because I lost almost four months without credit to my account for the unused portion extending to August 1. 

How do I receive partial credit for the renewal date being arbitrarily reset to today? I did not want this to be done and I'm very annoyed that I was cheated out of almost four months of what I already paid for, approximately $60, without any warning about the renewal date being changed.