On the tube recently, a woman with a push chair was struggling to get it down the stairs. An old man picked up one end of it to help her. Being a younger gentleman I offered to take it from him. I carried it down to the bottom of the stairs. The woman then just turned and walked off with the pushchair. No "thank you", no smile, no eye contact. Nothing.
I cant believe someone would be that rude.
Disgusting behaviour.