Sometimes the Shoutcast server will incorrectly present the information about current users to Centova.
To fix this, login to CentovaCast, then choose "Server Administration" in the sidebar, then Admin Login on the right side to login to the Shoutcast server administration panel. From here you will be able to view and kick any 'false' listeners. If you see what appears to be incorrectly listed listeners, such as those that might be there for 100+ hours, then those are likely the culprit - kick them and your problem should be solved.
If you want us to do this on behalf of you then please Hire our Experts to get this done.