"8 year old son has been to the A&E 3 times in 3..."

My son who is 8 years old and has never had a serious problems besides a bit of cold and cough, about 5 weeks he started complaining of stomach pain and felling very dizzy and no energy, last night we had t take him to Leicester royal for the 3rd week running as the pain was so bad that he couldn't sleep, I did try rining a ambulance but was refused as I was told that they was to busy, but on arrival to the A&E all bays was with ready to go ambulances, then on arrival we was seen by the easement nurse who was very helpful, but when we got to the jounior doctor he was very rude and clearly wasn't interested, he told me that what was I expecting a miracle cure and it could take months to see what was wrong with my son and he just needs to deal with it till then, I was not happy with his comments and we had to leave, my son has seen around 5 different doctors 3 different nurses and still tonight he lyimg in bed crying pain, how can a young healthy boy in the space of 5 weeks go from top student in his class, every after school activity you can think off, to not being ab;e to getting out of bed, not been at school for 5 weeks loses 4 kg and the all doctors don't know what's wrong but will not admit him for tests, he does have urgent refreal for a specialist that was issued 10 days ago and we still don't have appointment as they are on holiday, so once again my son contunies to be in pain and the NHS seem to think that this is perfectly acceptable as I was told last night, i just cant understand why nobody is doing anything !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!