Hello, I can understand that this has been a frustrating experience. Thank you for taking time to review your product. We are doing our best to improve the quality of our products. I am including a link to a helpful troubleshooting guide to support your concerns on the oven temperature (https://bit.ly/3J7qDOa). J&J International is Samsung's official parts distributor for customers purchasing Samsung parts or accessories. To place an order you can go online at www.samsungparts.com, or by phone at 800-627-4368. J&J's hours of operation are 9:00 am - 8:30 pm EST, Monday – Friday. Here is a link (http://bit.ly/2ssxImE) to assist you with finding a local certified Samsung service center. If you have questions or further concerns, contact us directly on Facebook at (http://m.me/samsungsupport) or on Twitter at (https://twitter.com/messages/compose?recipient_id=18768513). When you message us, give them this number (1144001001) and it will help our team pull up your information. Thank you for being a Samsung customer. ^Lena