To comment on what Alouette said, I had a similar, but slightly different experience just recently. Instead however, this person decided to start the bafoonery (sp) with me instead of a white person.
So, I'm calling up an out-of-state university to confirm that they recieved all parts of my grad application. It was due in 2 days. The woman (who started the phone call very prefessionally) must have picked up that she speaking to a fellow black woman because not soon after she tuns completely "Nae, Nae" on me.
She starts talking extra loudly on the phone. . . using her ebonics and yelling to other people in he backgroud ( "Tasha where da mail man at. . . he come in yet ?") What topped it all off for me was when she said "Gyrl hold on fa a minute . . .I tink das da mail man right now and he might could have yo lettas and stuff" I just looked at the phone and thought what in the he** kind of office are you running. As a potential student that situation right there could have easily change my mind. This lack of professionalism could be the reason why a lot of black people are reluctant to do business with "our folks"
P:S: da mail man had it