Hi Mariela,
Glad you asked about the unusual noise. I have provided a Samsung link below to understand the noises from the Samsung refrigerator.
Here's the Samsung link: https://www.samsung.com/us/support/troubleshooting/TSG01001032/
If you have inquiries and need further assistance in the future, you may contact 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
Once you contact us, you can provide this reference number 1145032552.
^Rainly