I have today had an appointment by post (arranged Monday) for the wrong hospital and not even the right consultant.
In the same post I had a "notice of postponement" due to "unforeseen circumstances".
I spent 39 mins in the queue to my doctor's surgery to see what has gone on.
They say it was sent in error and should have been cancelled not postponed. They have told me they have sent off a referral to the correct hospital as well!
The last time I needed a referral the hospital cancelled it on their system due to a "suspected computer error"! If I hadn't phoned them after 12 weeks (the wait my doctor said to expect) to find out how much nearer I was to getting a date, they would never have known. I would be waiting still.
Sadly, the NHS is a mixed bag.