I booked advance tickets via Trainline. I paid for them to be posted, but they didn't arrive. I phoned Trainline and was put on hold twice for lengthy periods while the staff apparently tried to find out what their procedure was. Trainline staff refused to re send the tickets, though I explained that I'd opted for this delivery method, because I have very little time and no transport and live some distance from my local station, with no direct bus route. (I never like to risk collection on the day, in case something goes wrong). I emailed and met the same refusal. No one has even offered to refund the postage. Very unhelpful attitude. I won't be using Trainline again.