I have 12490 points which comes to £ 12.49 want to buy the new fold. How do I get to use the points I have to come off the price. The checkout takes my trade in off but I don't know how to use my points. Every time I try to check out using reward points the price goes up. It went from £929 to over £1600. Gave up in the end and paid by direct debit instead of samsung pay.