"second time no follow up appointment"

I have Macular degeneration of my right eye and have been having regular 8 week appointments to have an injection. My last appointment was on 6th April. I waited 2 hours to be told for the first time in 18 months I did not need to have the injection unfortunately the two clinicians were very hard to understand. I have not received my follow up appointment . I have rang on 5 occasions and have left messages. Today I managed to speak to someone who said the lady I needed to speak to was on annual leave.

The last time I had this problem quite a few weeks went by and when I was eventually seen my eye had deteriorated and the consultant asked me if I was going to take this up with the trust.

Having worked in the NHS for 25 years I know mistakes happen but I am quite frustrated at not being able to sort out this problem. Eyes are very precious.