"Online booking system is completely inappropriate"

My gp had booked an urgent appointment with the chest and respiratory clinic at Southend using the online booking system because being a 41 year old previously fit and active person having low oxygen levels and chest pain they thought I should be seen quickly so although being out of area it seemed the best option to get checked quickly and what I thought was efficiently. I should have been re-admitted to hospital in hindsight which is what my gp had suggested but as I felt I could manage at home I though it was best not to go back and block a bed as I have a good family to support me at home.Southend then telephoned to leave me a voicemail message saying my appointment had been moved and they would send me a letter to confirm the new date. As I was slightly concerned that when that date would be I telephoned to ask if a new date had been allocated to me. The staff where aprupt and sharp. Firstly they informed me that I didn't exist on the appointment system. When I had argue the point (bearing in mind talking leaves me breathless) suddenly they realised I did and told me that I couldn't have the appointment and that it was fine because I would be allocated one soon. I explained to what sounded a very bored member of staff that could they give me a time span and explained would it be better to be seen close to home? They couldn't say. Then I'm told my details are somewhere on the consultants desk and only the consultant would decide when Or if I'm going to be seen not my g.p. So why are Southend wasting my gps time by providing an online appointment system? What's the point? It's disgusting that having seen some progress and possibly getting help it's snatched away by an unorganised pointless system which disregards gp advise. I understand the NHS is underfunded and understaffed but empathy and kindness cost nothing which sadly the appointment staff fell far short of. I can't go private now as I have a pre-exsisting condition but if I had the money I most certainly would. So I will wait in-line and hope that somewhere along the line I get some sort of appointment before this side of Christmas. I'm disgusted that one minute you have an appointment then you don't.