Bunch of chancers

A group of people unable and/or unqualified to carry out a specific task.
They have a dangerous mix of imposter syndrome and narcissistic traits so they are not truly aware of how absolutely useless they are.
If you ever have to deal with a Bunch of chancers in business you'll find that they make the most basic tasks completely infuriating.

Can also be used in an affectionate manner

I had to email that bunch of chancers 19 times over the last 6 months and the problem is still not fixed. Seriously, why do they have to make it so hard. What a bunch of cunts.