My story.
Had a ticket DTW-LAX-SYD and CNS-BNE-LAX-DTW
Tried to add stopover SYD-CNS
1st call - want 90k more miles
2nd call - stopover is no longer allowed
3rd call after seeing this post - got the same customer service as the second call!!! He remembered my long name. Told him I got email from Delta that stopover is still allowed till end of year. He did a plea to ticket dept and made it happened. Yippee!!!
Third time is a charm I guess.
