Hi Ded,
I know you're frustrated but everything that's happened to your dad isn't uncommon at all. I've had the facial swelling that was the result of an infection, just happened over Christmas break, the constipation, I also have a PEG tube and I had my second surgery 4 months ago. I don't think anyone is "allowing" him to have these issues, they are just part of this journey at times. Sorry he has to deal with it but being angry about it will get in the way of how you mentally need to deal with his docs and nurses right now. Just my advice.
Take care,
Minnie

SCC Left Mandible. Jaw replaced with bone from leg. Neck disection, 37 radiation treatments. Recurrence 8-28-07, stage 2, tongue. One third of tongue removed 10-4-07. 5-23-08 chemo started for tumor behind swallowing passage, Our good friend and much loved OCF member Minnie has been lost to the disease (RIP 10-29-08). We will all miss her greatly.