Trying to book rt tickets SoCA to Aruba for May.

Using Kayak.com shows $676.10/person LAX/ATL/AUA then AUA/ATL/LAX
Using Expedia.com same $676.10
Using Orbitz.com close $687.30 ?

With the understanding what I should see for prices, I move to Delta.BOMB
exact same flights shows $1123.30 when put in as LAX-AUA rt
using multi-city shows $931.10 ???

So, I call the SMS line and let them know what has happened, they could care less. They work it the same way I did and come back with "the best possible fare is $1123.30." I ask them to look at flight 370 and notice only B Y A and F inventory are loaded. Transfered to "supervisor" to help with that. ? She agrees but "RM is in charge and they do not take calls from reservations or the public." WTH? I suggested building as separate one ways, she said they are "not allowed." ? Ok, can you please build by segment and "that brought the price down to $931.10"

We would like to fly Delta due to Medallion status but cannot see paying ~$270 for the honor to fly Delta.

Any help? Where can I go. Will a real TA be able to help. I wish the Beverly Hills or Costa Mesa city ticket offices were still open. They understood customer service.

GRRRRRRRRRRRRR!