Joke Collection Website - Public benefit messages - Isn't there a charge for unsuccessful SMS sending?

Isn't there a charge for unsuccessful SMS sending?

Not in theory, if you didn't send it to the other party, you didn't receive it.

However, I have also encountered that the mobile phone display was not sent successfully, but the other party received it. . .

In fact, the mobile billing system is also full of convulsions, and there is no charge from time to time. Although you can check the list online, what are you going to do if you are short of 1.20 cents?