Freezer is great, Refrigerator is warm

Hello, A few months ago, I woke up to find my refrigerator at 46, while setting was 34. I defrosted the whole appliance, and all was well.

Now, my freezer is still running beautifully, but the refrigerator runs at 58 to 62 degrees. I tried defrosting again, to no avail.

I would be glad to pull the rear panel off, and fix what I can. any suggestions?

If not, how do I find someone that is willing to repair a Samsung? I called around the first time I had this issue, and no one in my county wants to work on a Samsung…

Thanks.