TMO GRC Fortworth TX

This is very scary. I initially bought an iPhone 13 Mini Starlight (color = white). I found the phone too small and returned it to the store, but they didn't have any iPhone 13 Standard size Starlight in stock, so they told me to keep the Mini until they could get me the Standard I wanted.  However, I was sent another Mini, NOT a Standard. So, now I have TWO Minis and returned one of them, the one which was sent to me by mistake, to GRC in Fort Worth and it took UPS a whole week (from July 14 to July 19) to deliver it.  Now I need the Estándar model iPhone 13 Starlight sent to me, as was ordered, so I can return the first Mini (which I am using until the Standard size phone comes). I wonder if, this time, they'll get it right (size and color). Why do these things have to be so difficult??