I had and alarm set for 6 in the morning. When summer came I deleted the alarm and the special ringtone I set still goes off at 6 in the morning. None of my other apps have this ringtone. I don't know what to do.
Which phone do you have? Which OS is it on? What kind of "special Ringtone"?
I would first try a hard reset. (Reboot). If that didn't work, I'd try Reset All Settings.
Go to Settings >General >Reset >Reset All Settings. This resets to default everything in Settings, including notifications, alerts, brightness, and clock settings like wake up alarms.