The galaxy s20 that i had used to alarm every morning at 7am. There was no alarm set for that time the only way to stop the alarm from sounding was to restart the device. I upgraded just to get rid of the phone. I now have a note20. It dioes the same thing but at 10 am. Is anyone else having this problem.?I will never buy another Samsung phone.
clear cache and data for the clock app, possibly the old alarms are saved on the cloud.
submit an error report if the above step doesn't work (members app > + button > error report)