Flight cancelled and poor service

Flight on Saturday 12th March was cancelled by Swiss Air due to a technical problem on Friday 11th that caused the flight to return to ORT. No notification was given by Swiss to me and a fellow Business Class passenger prior to the flight. We arrived at ORT to be told the flight was cancelled as the passengers from 11 March were being boarded. We were told to queue in the tickets line for rebooking. There were hundreds of passengers in the queue and one representative - no priority for Business Class despite the huge payment. We queued and after two hours were told there was not computer system to confirm our flight, we were told to return to the airport the next day but with no guarantee that our flights and connecting flights would be confirmed. The person at the desk was not a Swiss Air representative but an agent. Accommodation was offered at a local hotel but this would not have resolved the issue. Swiss Air should have had a representative at the airport and should have communicated the cancellation the day before or the day of the flight. I am extremely disappointed with the service. I will not chose Swiss Air again.