I've been trying to remove my SM# from my last flight of the year to keep from making DM. (Will be over by 20 miles)

The gate agent and dm line couldn't do it as when they removed it it would ask for a code they had never seen before. I'm on the flight now and asked at @deltaassist and they haven't replied yet.

Any other way to get miles removed from the account? They all thought I was crazy that I don't want the miles. Maybe Delta's computers think they are helping in this case when in fact they are not.