I agree with absolutely everything you say. You wouldn't be so long out of radiotherapy had they taken notice when they should - if that makes sense. And of course you have had to have various things coped with privately. There are plenty of things that the NHS just doesn't cover - and needs must. One has to do something.
Wishing you would go away and not bother them really isn't going to help anyone. Something has to be done. We all know that everyone's books are full with new cancer patients, but there jolly well should be follow up/aftercare that actually does something.
Now, I'm, sure you don't need it, but I would be happy to do any proof reading, should you so wish - although there are times I can't type one word without making an error. However, it usually turns out OK in the end.
Life's a bitch - then it has puppies.