I missed my outbound flight with BA to luxembourg and decided to take a cheap easyjet flight next morning. I tried to chek in for my return flight with BA online and the website was non-responsive all day. No error messages, no notification. I showed up at luxembourg airport to take the return flight with BA to find out they had cancelled my ticket. I went to the ticket office who said they cant help me but sell me another ticket for €470, maybe I should call customer service. I tried calling customer service and it took them around 25 minutes to answer the phone who then said its their policy to cancel return flight if I dont take the outbound and the best they can do is to transfer me the sales team to sell me another ticket. I was waiting for the transfer for 20 minutes in which time trying to buy the ticket at the sales office who couldnt connect to BA server and was having technical problems. At this time they were telling me its too late to buy the ticket as there was an hour left for the flight. I tried speaking to the staff at the checkin desk to see if there is still time as it was the last flight home. the staff treated me as I did something really wrong, very rude and deffinetly not helpful. I managed to connect to the internet on my phone a quickly buy a ticket for €500, and as I press the buy button on my phone I was asking the staff if they are going to let me check in if I buy this ticket as they knew the situation I was in. I didnt want to buy it and get told that I cant take the flight. Their response with a condesending attutude was 'get in the queue and we'll see'. I bought it anyway and luckyliy I was able to check in. I obviously understand now that its the standard procedure to cancel return flights if outbound is missed but the least they could have done is let me know by email soon as it was cancelled so I could have bought a €50 return ticket with easyjet. I was shocked to see that none of the staff cared if I was stuck at the airport for the night and all they cared for was trying to sell me an expensive ticket. Awful behaviour that you would expect from Ryanair but not BA. Obviously there is not much difference between them morally.