At 15 mins after takeoff captain inform plane needs to return to Medellin because a technical situation. The change flight to next day directly to Puerto Rico. They'll pay for hotel (a specific one), dinner, next day breakfast and transfers from and to airport. But when get to the hotel, hotel administration informs they don't have rooms available and that they did not confirm 'anything' to the airline. We wait until night, and nothing happens. My group of four stay in a hotel nearby and pay for it. Next day during check-in we explain to de counter employees all details and they call and make 'some things' and pay us hotel and dinner expenses. This employees are super heroes for us. Airline keeps us waiting for hours to resolve the situation. They could tell us, right away, that we select any hotel, pay for it and bring receipts next morning.