How upsetting. I agree with Tanya, keep your own due date in your mind and let them put down 7/3. You know when you are due, who cares what they write on a piece of paper

If it's any consolation my best friend was told what her due date was, and it was so wildly inaccurate that it meant her conception had occurred when her husband was in Africa Fortunately her husband had a sense of humour