Amazon is forever charging me

Consider using AWS Cost Explorer to find out what is accruing charges in your account https://aws.amazon.com/aws-cost-management/aws-cost-explorer/

AWS Cost Management can also give you a view on this https://console.aws.amazon.com/cost-management/home#/dashboard

Detailed advice on terminating resources you don't need any more is here https://repost.aws/knowledge-center/terminate-resources-account-closure

A drastic option if you want to terminate all running resources in your account is AWS Nuke (caution: use with care!) https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/automate-deletion-of-aws-resources-by-using-aws-nuke.html

if you believe there are charges being applied to your account that should not be billed for then this isn't something that can be resolved on re:Post. Please raise a Billing support case and AWS's billing support team can assist https://support.console.aws.amazon.com/support/home#/case/create