I won't travel with BA again. When we reached the boarding gate firstly the lady working on the gate very dismissively told me to go to the other person. I was then told my cabin bag had to go in the hold as the plane was full. Said I wanted to keep my bag but I was given no choice. I then asked why another lady was keeping her bag, they didn't know I was travelling in a group with her, so the man lied and said she was in group 1 (the group of passengers they really care about). I explained that she wasn't as I knew her so the dismissive lady rudely called across and said that passenger's bag was smaller, it was marginally smaller than mine. On the plane it wasn't even a full flight, lots of space still in the overhead lockers, and others boarding after me had kept their cases with them. I really don't appreciate being blatantly lied to at all. Same scenario on flight home and I now have a damaged travel case from it being in the hold. Glad my next trip is not with BA and nor will future trips be. Also both flights were delayed.