Let's not start calling for blood and saying ridiculous things like the 999 operator has blood on their hands. Or making silly comments about them being "lovely women" - they may well have been, they may have been very unpleasant but unless you know them personally you don't know.
People working on 999 lines are under enormous pressure and get a LOT of time wasters. The caller wouldn't give her name and wouldn't say what language she spoke - there was obviously some sort of communication barrier. She just kept asking for an ambulance. They also tried to call the number back and didn't get an answer. 999 times out of 1000 when that sort of call comes in it is a timewaster or a hoax. The trick is spotting the 1 time when it isn't and it is clear that the SYSTEM has failed here, not the individual operator. Slinging around personal remarks or calling for them to be charged with manslaughter is just madness.
There is definitely a wider conversation which needs to take place about people who have no support network and who are off the radar or authorities. In an ideal world there would be joined up thinking between the hospital, the GP, social services and the Police so that someone missing a follow up appointment in these situations would be automatically flagged for a welfare check. Or that someone who has been discharged ringing 999 would automatically flag on the operator's computer that this person was in hospital 24 hours before. But to do that you would need to integrate all the systems together and a huge proportion of the population would be up in arms about data protection, the government having access to their information, misuse, a nanny state, Big Brother, hacking....
The NHS is not fit for purpose and the sooner the government stop trying to prop it up by slinging cash at it the better.