You know what I hate? When I'm standing there waiting to be waited on & the clerk answers the phone & takes care of the "phone customer" while I'm standing there...waiting. I may be in a hurry. At least put them on hold or tell them you're sorry & ask them to call back in a few minutes. I remember when I had my fist job as a clerk that's what we were told to do, take care of the customers standing there first. To answer the phone was to be rude.