A Call Centre is what the public understands you to be.
The public understand that the person they speak with is a 'call centre operator'.
Why confuse them with a purely cosmetic name change.
..and in the process write off an amount of public money that could be better spent on policing the streets or employing more call centre staff so we are not kept waiting ages for our calls to be answered - a change of name will mean a change of stationary, a change of directory entries etc etc etc.
Put my soap box away now.