Bad experience

1st April Miss Anthea Rudd received a notification stating the flight JE273 has been delayed. I call the call center to confirm our flight schedule, because I did not receive any notification, 3rd of April we arrived at the airport just before 7, I tried to check us in online on our way to the Airport but it did not work(this I won't blame Mango for, because it could have been signal reception error).At the airport - Mango check in desk, the lady took our ID's checked our details, did all the formalities and then said there are 3 seats available on the flight but they are not together, they are separate, so we will not be able to sit together. I then said it is ok , it would still be fine as we did not have a choice. 5 minutes later she said the flight is full, she can't get hold of her \ manger"we will need to go to the mango desk"