We wouldn't we able to access your account for security reasons. Please note that you'll need to regain access to the channel first to be able to delete the videos on it. Our account recovery troubleshooter is a good place to start: https://goo.gl/anQq9x . Hope this helps.
Sorry to hear you're still having trouble accessing your account. Try this guide and let us know if it helps: https://goo.gl/MZ4Ss3 . Keep us posted.