A sign on the front door is a bit late once you are there.
My issue was that one member of staff was happy to do the exchange but the manager wasn't. Her attitude of ' there was prior notice on all receipts for pre Xmas purchases' simply wasn't true
I had the same issue in there today. Girl on the till was great but senior supervisor was a bit of a jobs worth. She tried to say that it had been told on all orders that no returns until 28th Dec.
When I got out the invoice, delivery note and packaging (none of it said no exchanges until 28th...