In addition to 732-597-7766, they also call from 323-987-4811 and 646-506-4330 and 407-634-1100 and perhaps more. For people in US, they present as the IBS Group Inc. Although I will be surprised if they are actually registered anywhere here as a corporation. Domestic area codes are strategy to hide true source of calls. Multiple numbers makes them harder to block. In India (true location) they are "Imagine Bpo Services P Ltd". (Thx to BigA for pulling their Whois)