Thats bull! Simply cancel and rebook. You are outside of any penalty timeframe. The agent you are talking to either has no idea of wht they are doing or is looking to pocket some addition commission. In either case that agent will not be around long wither through incompetance or because they are in it just for a few quick bucks and then getting out. Talk to a differant agent and in any case I would cancel with this one and rebook with someone else.