"Shockingly bad communication no respect from staff"

The communication is shocking, if this was improved, and the staff worked together it would be a good experience. I called to change the follow up appointment as it was before the tests! Switchboard told me the doctor Who sent the letter did not exist and I did not gave any appointments booked! I gave codes from the letter they told me they could not help! I eventually spoke to the correct department, goggling the hospital I found right department and doctor. I changed the appointment, the person on phone helpful, I gave date of tests and checked enough time to get results, I was assured that was fine. I took a day off work,arrived on time waited 30mins to be told by a rude unhelpful person, not sure if he was a doctor, nurse or porter that the results were not ready. Is this a way to boost car park income or make you go somewhere else when unwell.