Grumpy Sales Assistant/ Cashier

I just had a dissapointing&cold service from a lady called Anita at Pepcell, highveld mall. She looked angry for some reason. She didn't greet me was just silent after begrudgingly assisting me, I had to ask her if I have finished sending the parcel, she looked bored and said yes. @Pepcell don't you teach your employees the importance of customer service? Bcoz the service I got today was terrible next time I'll be using a courier company!