Same thing happened, only wanted service manager of which we don't have one either. After me asking numerous questions, woman said, "let me call them and see if they have more information on this package". Have received calls like this before.
Called and left a voice mail saying that I inquired about a payday loan. That I was approved. Just go to a website and enter a code. I deleted the voice mail. But then got worried that someone may be stealing my identity. So I tried to call the number back. But it hangs up every time I dial the number.