Well, I did call several different people. No luck. Web Support told me that the fare never existed. That wasn't true. I tried again this morning even called customer service, this time I was told the flight I wanted is oversold, yet the website is still selling seats (not at $100 more but only $30).
Ultimately, I bought tickets for the earlier flight and customer service is sending me a $25 coupon. What I'm trying to figure out, is what went wrong and will United not have this same set of circumstances happen again? I'm leaning my conclusion towards the problem that is created when the web sells tickets at different price than the 800#. This could create lots of issues in the future if UA keeps this two-tiered pricing structure up. It's one thing when they offer 10% off all web tickets but when they start scaling their discounts to sell seats on certain flights, that's when the troubles begin.