"Time-wasters!"

I have been referred to an ENT specialist as I have a chronic sinusitis since July 2018 and I have a deviated nose septum which needs to be fixed as it makes symptoms even worse.

I have received a letter appointment scheduled in 3 months time (which is the average time for a NHS free service), and after using all nasal sprays required (as instructed by my gp) I turned up the appointment day. The appointment was scheduled at 09:50 and been delayed many times until 13:00; all he did is just prescribing other kind of nasal sprays (with literally the same active ingredients) and state that if they do not work, he will offer surgery to fix the problem. They did scheduled the follow up appointment in another 3 month time (19th of Jan) which has been rescheduled for the 24th of Jan (today). This morning (after asking for an unpaid off day and drive to the hospital which took me 1 hour) I went to the reception to make the check-in and receive the surprise that my appointment has been cancelled and re-rescheduled for the 8th of February! All they said is "we are sorry but we did cancel that on the 15th of Jan and we sent you a letter to your home address" WHICH OBVIOUSLY DID NOT ARRIVE! How can you assume that a letter send through royal mail 9 days before, can arrive in time? To sum up:

I have lost a day of work, waste 3 hours to arrive and come back home with nothing, waste other money for parking premises, still have no clue of what they are going to do, I`m still ill and maybe worse than before. Thank you Queen`s hospital, thank you NHS