An incomprehensible monthly charge. I need an explanation.

In February, our company conducted a total of 11 trade-ins with the person above.

AT&T Business
4509 Freidrich Ln, Austin, TX, 78744
(Edited to remove personal information)

One of them is not covered by the discount promotion.
I've tried contacting the person above, but I haven't heard back for months, and she's not answering the phone.

I looked for AT&T's franchisees, but I don't see the same address as above.

I want you to help me.