Sonic Drive-In review: manager complaint

I'm a regular customer at Sonic In Anderson, SC On East Greenville Street & I go get a large sweet tea every time I go. Sometimes it takes a second but sometimes it takes 15-20 minutes for me to get my tea beacause there is always a man at the window talking to people in front of me. I don't mind it some days but I have to work & I can't get out of drive-thru sometimes because of his incessive talking.