My mobile phone is Nokia E72. There was an error when using it, and the wrong message was sent. How do I stop sending these messages?

If you can't stop, the only thing you can do is to turn off your phone immediately or put your phone in offline mode, so as not to send the last few numbers. The previous number is sent, depending on your reaction speed.

It won't be sent after it is turned on. All you have to do is find the outbox and delete those messages.

Or switch to offline mode to delete.