Unhappy passenger

I have flown with Mango for many years. More recently I have incidents of changing flight times. The most recent one was we where supposed to fly at 12.00 The day before we were due to fly, we received an SMS saying the time had changed to 07h00. The result of this was we had to stay over at a hotel near Cape Town airport and pay for staying over. This type of thing is unacceptable. Will change airlines as a result!