I've called and tried that before and the flight was 100s of dollars more each direction to get out of the "sale" codes, which is a bit of nonsense. It took a while for me to explain to the agent what I wanted but she eventually got it, but I didn't want to spend the extra for the extra points. It's annoying because I've booked flights with full tier credits that were cheaper than the other "sale" fares which yield 50% points, for more money.