I have 4 AU adds that just popped up today with the New Company. It is the same two people, twice. They both are to be added on a Barclay card and also on a Discover card. Both people have an identical address, and when I google it, it is a UPS store. Should I be concerned at all by doing these adds?
It wouldn't hurt to contact the TL company, but on the surface, this seems fairly reasonable.
If a customer wants a bigger boost to their credit score, then buying two slots is better than one, and I believe the TL company may intentionally give two slots from the same cardholder to reduce the chance that something goes wrong and only one of the two will post.
Plenty of people use mailboxes at UPS for businesses, or when they want better privacy, or if they are on the road/moving around frequently. These two people are likely partners (either in business or relationship) and are planning to jointly apply for a mortgage, business loan, etc, so they both wanted to boost their scores similarly.