I cannot work with a certain age group. I'm so sorry but they're clueless, unprofessional and have a level of confidence that can only be categorised as delusional.
As with most things, there are exceptions to the rule, but it's a no for me.
I have a lil joke that my brother's (who lives in England) phone rings in an English accent because everytime I call his phone specifically, it always rings in a different tone to everyone else's.