Hello. My name is***** to JustAnswer. I'm reviewing your question now, and will post back with your reply momentarily.
In order to help you, I need to know what operating system you have on your device. Windows Vista, Windows 7, 8.1, 10, or do you have a Mac?
Anytime a 'message' pops up on your computer and it tells you to pay? You were scammed. We have work to do.
First, call your credit card company and report it.
Then we need to go into your computer and change everything. Passwords, saved logins, recovery methods etc.
Are you still able to get into your pc now?