"Extremely bad experience "

I have had joint issues since the age off 5, I have been passed from department to department,

Had both my knee and hip operated on and still have no answers to what is wrong with me, they say I am extremely hypermobile but also have a rhumatroid factor with in my bloods but arnt doing anything about it, I had an appointment over a year ago and was told that I would get another appointment which I never did, my health as got worse to were I ended up in hospital and they said they thought I had Siatica. I haven't heard anything from the rheumatology department since.. my health and joints are only getting weaker. I'm getting no answer what so ever. Iv tried to contact them multiply times and no answer. I feel no one is talking me serious and haven't for the 18 year I have suffered with this illness.