Isn't it more polite to send text messages to customers than to call them?

Therefore, it is always more polite to call customers than to send text messages.

Whether it is communication, New Year greetings, congratulations, etc. , just call.

People you know well, you can send text messages, tell a joke, send a message and so on. I have to call and say something big. Don't let people say that you are casual.