I recently placed my first order with Waitrose and I had a discount code to use. Placed the order, £65, reduced to £45 with my voucher. A good solid offer for a new customer. Today I received an email saying they were cancelling the voucher and my order would now cost £65. I don't know how on earth they can do this as I only authorised £45 to be taken from my payment method, it's not up to Waitrose to decide to charge more that I have given authority for. I've lodged a complaint with them and if the response is unsatisfactory then I'll approach Trading Standards as something very fishy is going on here, a lot of people seem to have had the same experience. The discount code I used was legitimate, accepted by their website and it's only now, weeks later, that they have decided to do this.