The AT&T surcharge scam text below, which is supposedly from AT&T saying that the recipients have been overcharged last month, is a fake being sent by scammers. The AT&T surcharge text scam I received was sent from telephone number 917-664-3706, but the scammers are sending it from other telephone numbers. The link in the scam text goes to a phishing website (k3hfn .info) that steals account credentials, personal and financial information.