"Endoscopy department"

I have to have two yearly colonoscopies due to family history and felt this experience I had was very poor. On arrival Saturday 30th August 2014, I was told off by the nurse infront of other people in the waiting area as I was drinking a can of coke. I was taken in a side room and still addressed about this matter even though I had said I have had the procedure before and always bring a drink in. The nurse continued to address the situation in a negative matter telling me I wasn't allowed a drink for 2 hours before and nothing to eat for 5 hours before ? I advised her I had had nothing to eat for over 24 hours and only fluids to drink up to the procedure. She then said oh you are having a colonoscopy not a gastroscopy! I wasn't impressed I was being booked in for something incorrect. After being booked in and not fully of advised Of what I should be doing as in the way of undressing etc I was left to wander the corridor not sure of where to go? I was finally seated outside a procedure room and left there from 10.30 until 12.15 when I was then taken in for my procedure. (My appt was 10.45)?I understand there is a waiting period but felt I was pushed down the waiting line as two patients had drank and therefore had to wait longer before they could go in for their gastroscopy . When I got into the room I reiterated to the nurse, the doctor and the other lady in the room that I found the procedure very uncomfortable and i wanted as much pain relief and sedation as I always have if not more. I was given the medication and once the procedure began I became very uncomfortable and complained of this. They continued to do the procedure and I continually complained of how much pain I was in. I then began to feel very sick and became very sweaty and quite faint. The nurses and doctors still continued only giving a wet compress on my forehead and telling me I was doing fine. I felt absolutely awful and was in immense pain and discomfort, nearly passing out in a sweat. Whilst having the procedure another nurse entered to help with unblocking the scope and I was being covered in what I can only imagine was excrement which was wiped off of me at the end of the procedure. Once it was over I was wheeled trough on the bed and left for a short period before having a tea and me having to ask for a sandwich as I had not eaten for nearly 30 hours by this point. Normally this offered as a matter of course. I could hear my nurse and another nurse discussing my follow up appt and my nurse seemed quite unsure of what to do, she hadn't instilled any confidence in me the whole time I was there. The whole experience has put me off from ever having it done again and unfortunately I will have to have it done again