Said they were Diversified Consultants calling on behalf of At&t and needed to verify the last 4 of my social. I told her that if At&t needed to talk to me they would call themselves. I don't have an account with At&t but my husband does and it is in good standing. These people have called several times before but it is the first time I spoke with them. I told her I'd call At&t myself and for her not to call back again.