Samsung runs promotions on its phones pretty often. For the Galaxy S8 alone, we've already seen quite a few - a free Gear VR / an optional $99 bundle for pre-orders, a free "Entertainment Kit," and currently, a free $200 Visa card. However, while customers were recently guaranteed a $200 discount on the S8 in exchange for almost any phone in good condition that they sent Samsung's way as a trade-in, the company is having a hard time delivering on its promises to some.

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