Unlimited BOGO is false advertising

First, I am a diamond member. I tried to switch my by the gig mobile for my wife and I to the BOGO unlimited. I have received emails, text messages and saw it in the Xfinity app.  The first person tells me it’s for new customers only. (Yet requires an Xfinity internet account that has been active for 90 days?!!) Nowhere on any add does it say new customers only!  Lie #1. So I get transferred to the Xfinity mobile department.  This person tells me that I purchased 2 iPhone 13 Pro Max phones in 2021 so I would have to buy 2 new phones to get the offer!   Nowhere in the adds does it say that!   Lie #2. I am extremely unhappy with Xfinity at the moment!  Verizon has some intriguing offers.