How to stop pre-authorized Credit card billing?

1. Read your pre-authorization agreement to determine the stipulated method of canceling the authorization.

2. Contact the company charging your credit card and request they stop charging you.

3. If method 1 & 2 do not work contact your credit card company and tell them you have revoked authorization for the charges.

4. If you are charged again, contact your credit card company and let them know the latest charge was fraudulent as you have already canceled the authorization in step 1 or 2.