MTN discontiunes Free Night Call

Mtn is now doing thing that will make many drop their MTN sim inside dustbin.i can still remember year 2009 to 2012 when MTN Night call was still reigning for me 12:00 to 4:30am but now reverse is
the case MTN NIGHT CALL as been cancel normally called MTN HAPPY HOUR CALL,but now change to MTN COSTLY HOUR CALL.
we hope it is not the effect of the fine that make MTN take this decision if so then wahala don burst..because more of this blockage may be expereince in other MTN services
They are loosing customer by taking this move