Pre-ordered the fold 3 last week from Verizon. I told them I would pay 800 up front, and give them my note 10 plus for a trade in, which would give a 200 dollar credit. I was told that they had to the total amount, including trade in, but I would be charged only 840.10 up front closer to shipping. They charged my account over a thousand dollars and overdrew me. I was told that when they got the phone they would credit my verizon account, not my bank account, they don't see the charge on their end either. I asked about the signing and told them there is a holding near me at a Walgreens if they could have it held there or the store. I was told no, they would have to cancel the preorder and redo it. Then told it would NOT ship until the 27th, not earlier to arrive on the day of release.
This, of course, is after being bounced around from rep to rep for quite awhile. Next time, I'm going through Samsung directly and to hell with Verizon.