A little googling gives me additional numbers:
360-529-6100, 360-529-6104, 360-529-6105, 360-529-6106, 360-529-6122, 360-529-6136, 360-529-6163, 360-529-6170, 360-529-6175, 360-529-6190, 360-529-6199
www.complaintwire.org has a listing for "Card Member Services" where a few of these numbers were posted, along with many others.
Some reports say Pacifictel was on the caller ID. Others say New A Co was on the caller ID. Some say home security systems, other say consolidate or lower credit card rates/debt. Most say dead air, hang ups or something similar.