Account Billing Services Inc
719 1st St S
Nampa ID 83651-3859
http://www.accountbillingservices.com/
They are calling you because you or someone with your phone number has referred you to this billing service:
* A Health Care bill (Primary Health, Saltzer, Family Physicians, etc...)
* Home Owners Associations
* Many other companies in Idaho and Oregon
You can set-up a payment arrangemenet.
If you do not pay this bill in 45 days you will be sent to collections, where it will report to the Credit Bureau's and eventually you'll be sued and your wages garnished.
This is legitimate! The caller is Account Billing Services, as "ABS" states in their comment above. And I knew that I owed Saltzer Medical Group, but I thought that it had not gone beyond 90 days. I called Saltzer directly, talked to Billing Dept, and they straightened me out.
ABS wants a minimum $50/month, and charges 1%/month (12%/year), until balance is paid, which is way better than any credit card. So I thought I had 2 months left before paying, and I will pay them 2% before I get the balance paid off. Not at all unreasonable.