Charged even though I have a cc free membership, 7 day free trial canceled the day I signed up.

I decided to try the 7 day free trial for Adobe premiere pro today and after I filled my billing info and clicked start it said this:

 But then it showed this when I refreshed and scrolled up:

first it says billing unsuccessful, but when I refreshed and scrolled up, it said, Enjoy your 7 day free trial. So I thought that it was a glitch when it said the billing didn't work so I continued on to install and open the app BUT THEN this shows up:

 in the the top right, you could see it says trial ended. 

I was planning to work on one project and immediately cancel my free trial that day because it said it would automatically charge my card after the 7 days are up. So when it said trial ended, I immediately went to check if they charged my card. I'm still not sure, but seriously this is a scam. How did the 7 day free trial end the same day I signed up for it?? Doesn't make any sense. 

Then I immediately went to the Adobe account to cancel my free trial or anything I signed up for like it said in the free trial agreements if you want to cancel. At the moment it says:

 So I have a free membership, and nothing in the orders and invoices according to this, but I'm still worried about my billing info and if it will automatically charge when the 7 days are ACTUALLY over. 

Then I started researching other people who've had the same issue as me, then I saw one person who was in the exact situation as me and was charged even though he/she had a "free membership" 

 since this person was charged even though he/she has a "free membership" like me, will I be charged??

This is a serious issue that you need to fix Adobe. I haven't made any projects with premiere pro because it said trial ended.

If i get charged for no reason, there's gonna be serious problems.

I want to know if I have been or will be charged? I want to delete my billing info from my account and then I want to delete my account permanently. I want to make sure I won't have any future false payments from my card.