I got mine fixed! If you don't care for my story below here's what THE PROBLEM WAS: LOW REFRIGERANT FROM THE FACTORY.
So I picked up my fridge (RF260BEAESR) at a big blue box store for a nice discount. It had a nasty scratch down a side and I snagged it for almost 50% off. Due to the cosmetic blemish the store only offered a 30 day warranty and I was told the standard Samsung warranty doesn't apply to scratch and dent appliances. Ok so no big deal, I couldn't remember the last time I needed warranty for anything anyway.
Fast forward a couple weeks, I noticed that the beverages in this fridge were not as cold as the drinks from the main fridge (different brand) while both were set at the same temp. I brushed it off thinking maybe my main fridge was overcooling, as it has happened before. At this point I have not used the freezer yet so I wasn't yet aware that it too was warmer than the set temp. Some time later, I placed ice cream in the freezer. Imagine my surprise when I went to get ice cream a a few days later and it was like soft serve you would get at Mickey D's. This was the oh-snap-something-is-wrong moment that hit me past my 30 day warranty.
Frantically, I started searching online, only to find countless reviews of folks who had the problem of their Samsung fridge being too warm and couldn't do anything to fix it.
I placed my own thermometers in the fridge and freezer sections and monitored the temperature for a few days. I set the temps as low as they could go I think my freezer was set at -8* and fridge at 34*. The average temperature for my fridge stayed in high 40s and would climb to 54*-56* occasionally (definitely no good for keeping milk fresh). The freezer remained around 25* occasionally reaching 30* (got some extra deer sausage you're saving? fugetaboutit).
I somehow found a service manual and let me tell you; no combination of buttons, resets, temperature shifts... none of it helped the fridge get any cooler. So my thought process went something like this... This is a new fridge, normally parts just don't go bad on new equipment. If this was a thermistor issue in the fridge then the freezer would work fine and vice versa. The fridge/freezer works somewhat so it's not a total dud. Short of pulling parts and testing I went through the whole troubleshooting checklist and then God gave me an aha moment.
I've worked on vehicle AC before but never put 1 and 2 together. When a car's AC blows cool but not cold air, sometimes all it needs is a small charge of refrigerant. I decided to try it, I had nothing to lose. I already had 134A (same as would go in a car). One resource I found stated that the particular compressor that was installed on my fridge had a working LOW Side pressure of 2 PSI. I hooked up my manifold gauges and let the compressor run for a few minutes and when it settled it was at 0 PSI. I slowly added refrigerant letting the compressor cycle for a few minutes between the small bursts of charge until it settled at 2 PSI. This was all that was needed. Ever since, my freezer has been holding a steady -5* and fridge 36*.
This may not be what is wrong with your fridge, but it fixed mine.
1) No matter how good the deal is, don't dismiss the reviews. Sadly my fridge was rated 3/5 stars.
2) Samsung is good at making phones and TVs but NOT appliances.