Mango Airline dreadful service

I would give zero stars if possible. Disgusting experience with Mango. The had delayed our flight 2 times on 28 April and eventually cancelled our flight 30 minutes before boarding and we were already at the airport ready to check in. This caused us to miss many appointments during the day and now left us stranded on the airport and the Mango office at PE airport was closed. No one offered any help or advise from mango and their phones just kept ringing without answer. We then had to book at the airport with British Airways to get home. Mango did not send any reason or apology for the flight that was cancelled at the last minute and have not even provided a solution or offered to refund us for the flight WE PAID FOR!!!!!!!!! Earlier that day after holding on the line for an hour and a half, I got through to a very rude agent to ask them why the flight has been delayed and she provided no details other than saying its for operational reasons. Needless to say that our original flight to PE was a nightmare as We pre-booked paid seats on the website when making the booking in January and we were not given our seats where again a very rude agent told us "Sorry. the flight is full". They assigned seats at random. We did not even sit together, we were given two different seats. Disgusting Airliner and the most unprofessional people it has ever been my misfortune to deal with