Caller ID AT&T SVC CTR", no message left.

If you Google "AT&T SVC CTR" you'll find lots of comments on this outfit, whoever they are. They're not AT&T, though.
Type  210-570-1370 into the 800Notes search bar to read more about these scammers.

Caller ID was "AT&T SVC CTR", no message left.  Location is in Texas.

Most likely spoofed robo caller with phony caller ID from lowlife overseas.

Caller ID is definitely not AT&T and probably by, at best, someone who gets a commission from signing up persons to AT&T; and at worst, someone trying for identity theft.

Don't do business with these scum. Robocalls and false caller ID are independent violations of FTC rules, in addition to DNC violation.

Want to take action, report them at https://complaints.donotcall.gov/complaint/complaintcheck.aspx

Want info on these scammers, check out https://www.callercenter.com/404-201-6957.html

They've been calling for months, even though I blocked them a long time ago. Obviously a robocall, since a live human being would have figure out a long time ago that they weren't ever going to get through, and the real AT&T would have found an alternate method of initiating contact.