Revolting Attitude from a barista at Caltex Cotswold (KZN Waterfall)

I go to Caltex Cotswold every morning for coffee and the barista working there, his name is Sicelo, has a very disgusting attitude. He frowns and raises his eyebrows at me when he greets me (and that's if he does greet me). He sometimes takes my order with his back towards me, which I find extremely rude!! I once asked why he won't relax and look enthusiastic to serve customers and he frowned even more after that. I now dread going in to buy my coffee because I have to deal with his stinking, egotistical attitude and I think this needs to be addressed. He was off for some time and it was such a relief walking in and not having to deal with him and his attitude but then he came back and I don't understand why because that person should NOT be placed where he has to interact with customers, period!