"Refused access to a booked emergency appointment!"

It is Easter Sunday I had an emergency appointment booked for 4.30pm due to rash and headache. I arrived at the doctors door at 4.39pm due to the taxi service taking 30mins to arrive. Once I got to the door and rang the buzzer and waited for an answer, upon answering the receptionist took my name and blatantly refused me access! I explained the taxi service took 30mins and her reply was oh well we have a policy if you are 10mins late we won't see you, bye! What a joke.. I really needed to be seen and spent money and time to go to the doctors, for a receptionist to refuse me my booked appointment! It could be something a lot worse than a rash, hence the need for an emergency appointment for this receptionist to send me back home! I swear they think they run the medical practice.