ZAGG Invisible Shield Valencia Town Center

I walked by the Zagg store in the Valencia Town Center and saw an advertisement that one could "change out your current screen protector for $25." I wanted to do it then & there but the line was long and I was in a hurry so I just took a picture of the advertisement and called the following day to see how long the wait was. They told me that I could only change out a Zagg screen protector for a Zagg protectors. That is NOT what the add said and makes no sense why they are advertising a change out for $25 when it's only $7 to replace a screen. This is very frustrating and false advertising.