If the rep you spoke with was rude there is no excuse. And, based on your verison of the conversation your matter was not handled with the appropriate tact. Had it been handled better I assume you would not have left the conversation feeling the way you do. However, I would not term it as "with characteristic United rudeness". It is an individual with poor customer communications skills.

As to your specific request, put yourself in UA's position. People call them daily, some of whom did not re-qualify for (pick a level)requesting another status comp, claiming they will (empahsis mine) fly alot in the upcoming months. This is why there are qualifying guidelines. It makes it clear and fair to all. I can imagine complete chaos if this decision was left up to the individual customer service rep. The criteria would be a moving target.

I know that I sometimes get defensive when I ask for something and get told no. A rejected request handled tactfully and diplomatically helps smooth over that rejection. I actually appreciate people who can tell you no but you leave feeling satisfied.

BTW, I am unaware of any status challenges in the UA program. I know AA has one but not UA.