The system was supposed to be free for 2 weeks and you are already charging me 10 pounds. please end the cooperation
Welcome to the Atlassian Community!
We can't help you with this. You have triggered a charge somehow, and you will need to talk to Atlassian about the bill for it. (We're a community of people here to talk about Atlassian, we have no access to the billing systems).
Go to either https://support.atlassian.com/contact or https://support.atlassian.com/trello/ and select billing
