Charged for nothings

The past couple of days I’ve noticed that apple had been trying to take £8.49 from my account, but luckily I transfer my money into other accounts so it couldn’t take it. But the other day it ended up actually taking the money, and I don’t know why.

before you tell me to check the website so that you can see your purchases and subscriptions, I already have and nothing is coming up.

I’ve Googled it and apparently other people have had apple randomly take £8.49 to with no explanation. I’m not sure if this is actually apple or some kind of scam, please help me.