Verizon Wireless Deceptive Advertising or Bad Employee Lincoln NEBRASKA

I purchased two new iPhones on a BOGO special in July 2018; buy an iPhone X and get an iPhone 8 for free.  The only stipulation was that I had to add a line to my existing service.  Salesperson completed the sale and advised that I would begin seeing the credits for the free phone on my billing statement within 2-3 billing cycles. 

On the 4th billing cycle, I'm still not seeing the credits for the $29 I've been paying since July for the FREE phone.  I spoke to customer service today and he advised that, because the iPhone was not activated on the new line, I don't qualify for the BOGO offer and will have to pay for the phone in its entirety.  The advertisement said nothing about activating the new iPhone on the new line, only that a new line must be added to your plan. 

Further, the salesperson knew that I was wanting the BOGO offer, yet she is the one that set up the phones, activated the new line, and activated the new phones on those lines.  She never once mentioned that one of the iPhones had to be on the new line.  This is deceptive business and a very unknowledgeable employee.  I've been a customer of Verizon for 10+ years but am seriously considering canceling.