Hi wafflesyumyum, We appreciate your time in reaching out to us and we are glad that you purchased and chose our product. It warms our hearts to know that our Samsung Refrigerator and filters are part of your family now. We recommend that you replace the water filter every six months for better quality water. We apologize for the inconvenience of the water filter doesn't fit. We will surely notate your feedback about this matter for better products in the future. I highly recommend clicking these links for a basic troubleshooting guide for future reference: The replacement filter doesn't fit in your refrigerator: https://www.samsung.com/us/support/troubleshooting/TSG01109722/ Proper guide in replacing the water filter: Reset the water filter light. https://www.samsung.com/us/support/answer/ANS00060149/ I suggest clicking this link for a water filter replacement: https://www.samsungparts.com/PartsList.aspx?PartType=WATER%20FILTER You may also use this link for regular maintenance of your refrigerator's lifetime: https://www.samsung.com/us/support/answer/ANS00079481/ If repair is needed, please take note of your warranty coverage: https://www.samsung.com/us/support/service/warranty/ If you need further assistance, please reach us through 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 Reference Ticket number: 1144402879 Thank you for choosing Samsung. Have a great day. -Trisha-