Don't they realise how wonderful things will be after the change? These systems will make life so much easier. What is their problem?
The problem is that they are people. People are not rational. They do not always make decisions based upon logic. We are humans, not Vulcans.
So their 'stuff' gets in the way and makes things more challenging. They want to know details, about timings, why bother in the first place. They don't seem to absorb the information they're given and repeat questions again and again.
Let me handle it, I know just what to do. Get in touch...