+8009374604? Chinese service from T-Mobile?

I got multiple calls today. The people on the phone only speak Chinese. They claimed they are AT&T Chinese customer service. They said that someone use my identity to register a phone number at the AT&T counter at the Fujian Quanzhou Jinjiang International Airport in China (I asked them to spell the name for me) on March 12th 2023 at 3:18pm Beijing time. Now, I have no business with AT&T for many year, and I haven't travel to China this year. They know my surname and my email address. They gave me a case number, and the "worker"'s name and employee ID. And then they transferred my call to "the Chinese police". At this point, they hadn't ask me any personal information, so I still have a tiny hope that this was not a scam, until I search their number in the internet. So I tried to talk to the "police" with my very limited Mandarin, and the "police" on the phone does not seems to understand what was going on, and I was very frustrated after 30min conversation with the scammers, so I hanging up the phone. The scammers was not giving up and called me 26 times in 17min. These are the numbers they used:

• 888-608-0129
• 800-331-0567
• 888-608-4863
• 888-608-2420
• 800-937-3758
• 8621 2308 0888
• 8621 5500 4857

I hope Tmobile/AT&T can do something about it. At least put case in there website to warn people.