"Poor service from receptionist"

I attended an appointment for a blood test which I believed to be at 10.10. It was actually 09.50. How ever I entered the surgery a minute or so before 10am as not wanting to be late for what I thought was my appointment. I arrived at the reception desk and mmwas told sorry, your late, then looked at her watch and said its 11 mins late. Anything over 10 we can't do anything. I was then told to book an appointment for the following week. I explained that I had taken time off work and was there any chance I could be still fitted in. I was told no. Not even a chat to see if I could be fitted in. Very very poor service from the receptionist in my opinion.