Bumped off flight

We booked a mango flight which was scheduled to leave on the 11 dec at 17:00, flight number je547.<br> 1. We were at the airport on time (14:30)<br> 2. Our boarding passes indicated 16:30 as the boarding time although this was changed without our knowledge by mango<br> 3. The flight board did not indicate that the plane was boarding<br> 4. No one boarded the plane from 16:40 onwards<br> 5. It was imp**** by mango's rude service staff member that we were lying to her <br> 6. There is no control at the baggage pick up and any person wanting a new bag can just walk into the arrivals area and go to the mango office and pick a bag<br>