As a last resort, you can manually delete the program's folder and use a registry cleaner like CCleaner to remove leftover entries.
If a folder contains multiple components with separate uninstallers, you might see sequels like unins001.exe or unins002.exe . Is it Safe? skachat fail unins000 exe
It is an executable that runs the "uninstaller routine" for a specific program. As a last resort, you can manually delete