Trade in falsely marked as "Screen Burn". I traded in a fully functional device for the pixel 9 pro £200 trade in, and received an email saying the device had screen burn and because of this they would only offer a fraction of the device's value, £10 instead of £100.The device does not have screen burn, and was fully functional on sending. The email did not provide any proof that the device has screen burn. A quick Google shows many other people trading in their fully functional phones with ID through Carphone Warehouse, saying the same thing.This is the second time I've been screwed over by an ID promotion, first with their Currys gift card promotion, which they did not honour as per terms, and I'm severely disappointed. Will not be returning once my contract has ended this time around.My question is, if I accept this trade in for £10, which I'm sure won't be budged on even though it's a fully functional device, will I still receive my extra promotional value, or will ID find a way to get