Telkom early hours of the morning cell calls

How do you stop Telkom from sending an MMS message at 03h20 in the morning When your cell phone rings that early it is normally associated with either an emergency call from someone you know or bad news You do not expect (nor wish to receive a cell phone call at this time), and then it turns out to be an MMS message (how rude) Clearly Telkom has no respect for your privacy Their service is so poor that sending a complaint or trying to speak to someone to stop this nonsense is like trying to stop the current level of government *******ion (nothing can or will change) Best thing to do is stop doing business with them