That sucks you were treated that way... were you able to get it today!?
Yes, I was able to get it today painless and 100% satisfied. Thank you for asking and checking up.
The store and specialist you pick up the phone from is for sure the deciding factor on the experience you receive. The first store I checked out was Carlsbad location in San Diego, CA and the person checking me in from the get go asked me if I was doing IUP with my reservation, and I know she probably told the specialist I wasn't planning to do it. The specialist told me I exposed a loophole and that I needed to purchase it thru normal avenues since they "don't have plusses in stock".
The guy today at the Chula Vista store in San Diego was so chill, he asked me if I was doing IUP or if I wanted to buy it outright. He was totally cool with me buying it outright with my 2 year service contract discount, and there were no issues whatsoever.
Thank you all who shared this tip, it was super successful in the end!