AC did not respond to my complaint re: missing National credit. It had been a very long time, ie. 5 months since the rental and promise after many promises still no credit. I had also written to National. I received a reply from National's president's office within 2 weeks and now they will post 1500, instead of 500 miles for the rental. National and AC had each blamed each other throughout and said it was being dealt with (prior to my letter). In my opinion CP was way better at responding to comments and complaints than AC is.