It looks like the phone sends sms without my approval

[hans1977se]

I had an incoming call that i could not answer, and now i see that there is an outgoing sms at the same time as the time of the call to the same number. The message is "I'm running late, on my way now.", and written automatically by the phone.

Is this the horrible bug it looks like, or a feature that can be switched off? If so, how do i switch it off? Can it somehow have been done by the phone company?

EDIT: I have figured out now. Someone have came up with the "brilliant" idea to put a drop-down box with pre-written messages that can randomly be selected when the phone rings in your pocket.

Is there a way to remove this drop-down?