"Doctors like wasting money and time"

I have has a rash for three years and been misdiagnosed many times by my GP, the specialist didn't know what was wrong either so recommended I got a floating appointment at the hospital but instead they made me go in and tell them what they already knew just to be told 'o well you need a floating appointment so we can see the rash.' (Which I had for 4 months while I was waiting to be seen and happened to go a week before my appointment.) I could have told them that and my GP already recommended that but instead of doing that I have just wasted a whole day and paid parking fees for nothing. And to top it off the doctor was rude and dismissive.