Tim, thank you for reaching out regarding your fridge and freezer, which have stopped cooling. Allow us to help.
We recommend checking this guide to help you troubleshoot if the fridge stops cooling. Please choose "Refrigerator or freezer is not cooling at all." Kindly click on the embedded word and watch the video included.
Cooling issues with Samsung refrigerator or freezer
https://www.samsung.com/us/support/troubleshoot/TSG10003479/
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/Samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.Samsung.com/t5/Samsung-Community/ct-p/us
When you message us, please provide us with this reference number (1150520303) to help our team pull up your information.
Have a great day.
^Camille