Disappointed with Mango

I am very disappointed with Mango. I booked my weeks ago and I chose a time slot that was inline with my plans, but they change my flight without notifying me, or asking if I’m comfortable with the change.

You can’t move me from a 6 am flight to a 2PM flight without consulting with me. On top of this, i spent an hour and half holding for someone to help me without any luck.