"Disgusting"

My grandfather has had a knee operation a couple of weeks ago, then snapped his knee cap after the op. The brace he has had it put in was not properly fitted and moves, he has been in 3 times for the op to pin he knee and all three times he has been told he was not a priority, he still cannot it walk and seeming as both him and his wife are disabled I think this is even more disgusting. You wouldn't treat animals like it so why would you treat people like this, absoublutely disgraceful!