This is not at&t phone company, they are using several numbers now, they want info from you, and also 210-255-3192 is att, the real at&t should be doing something about this if you value your customers
This number calls our house at least two times a day. If you answer the phone no one is ever on the other end - just silence. After reading about this online it appears that this is not AT&T (caller id says ATT) Recommendation is to file a complaint with the FCC online.