Maybe you are a girl, otherwise how can you do customer service? If you are a buddy, I think you can exercise yourself by doing business. After all, just coming out of school, running a business is very training. You can earn some money if you run well, but you can exercise yourself if you run badly. There is no harm.
If you do customer service, you can only "work hard" and strive to be appreciated by the leaders as soon as possible, and then you will have a chance to improve. Don't you feel tired from this kind of work? Moreover, sales is a skill. It doesn't mean that if you sell a product, your experience can't be used elsewhere. It's done. It can be used everywhere.
Of course, everything depends on your own intentions. You must be interested in what you do. If you find a job that you are unhappy about, what's the point of doing it? . . . . . .
I hope I can help you!