Managing service area. Handling customer

Tis is my 1st time managing service area after being a manager. I'm panic n scare I will do things wrong or did something dat is nt suppose to do. But lucky I'm still okie with it. Things went okie but I feel stress when they keep on calling for manager n I can't help to do anything. I did try to help to solve some of the problems. Don't have enough ppl to do tis n dat making me a hard time n others oso. 1st time managing a angry customer as wanted to order a large coke but he had queued at the food collection area n he keeps can't get his order ordered. He was very angry. I didn't did a good job in tis part as I study service n yet I'm nt doin a good job in tis. Really d 1st time contacting wif real ppl n real situation. Hope the next time I will do a better job!!!! I find it interesting to work as a manager le as it is more challenging. Haha . Had learnt how to change CO2 tank as I wanted to learn it long time ago. I will ask. More questions now. Alvin oso said I'm playful. Haha.