Poor customer service

We had a London-Madrid flight with a connection to Caracas on Friday 24/08. Arriving at London Airport, Air Europa staff informed us that the flight was delayed and they had no additional information. Hours later they inform us that our connection flights will wait for us in Madrid. Arriving at Madrid, Air Europa informed us to run to the door and on arrival we were informed that they did not know they had to wait and that we were never on the waiting list which was already full. We had to wait until the next day to take the first flight to Caracas. When we got to the flight they informed us that we had to make a stop on Santiago de Compostela. Arriving in Santiago de Compostela we were asked to get off the plane and were standing on the plane for 20 minutes until they informed that we could not get off the plane. There was no communication, Air Europa staff had no information and the only thing they told us was that we made a claim, It caused us a big problem to lose a day trip which they never took responsibility. Last time I travel with Air Europa.