I have received a bill for Amazon Web Services - Dont remember signing up for this

Hello.

If you have never set up an AWS account, you may have been billed incorrectly or someone may have used your billing information.
I recommend that you review the following documents to see if any apply to you.
https://repost.aws/knowledge-center/charges-from-unknown-account

I would recommend contact AWS Support. There is a link to the AWS Support Center in the Resources menu at the top of the page.

Hope this helps!