This is the collection agency, GC Services. Barbados (with this phone number) is one of their 34 satellite offices. Generally they telephone from 877-290-9187
. If you answer their call, they won't provide you with any information but will ask for an address so that they can mail the delinquent collection paperwork. If this is their first call to you and you cooperate, they're polite. If you try ducking them, they'll start harassing you, as collection agencies generally do. However, it seems that their agents often telephone a "wrong number" - maybe you? They must work on commission and not be well compensated by their employer.