Bought 2 used Samsung Note 4 from these guys just ...

Bought 2 used Samsung Note 4 from these guys just before Christmas. One works very well. The other has issues, locking up, getting very hot, shutting down, rebooting, ect.... I went back 27 days after buying, and they said they would only give me $100 for it, even though I paid $350. I was willing to take $300, and trade towards another phone in their store, but they did not want my business........so never again will I shop there!!!