Booked a flight out of Beaumont, Texas to Houston, Tex on September 4th. I confirmed my flight received my boarding pass and my seat assignment. When I got to the Beaumont airport I was told it wasn't a FLIGHT but a bus. I asked for a number to call and tried for 2 hours on the bus ride to contact customer care only to be put on hold at one time for 45 minutes. I paid an extra $150 for my flight for the convenience to fly into Houston. I could have taken a regular shuttle for $38, but due to my back I had to fly... The bus arrived and had no air... it was 98 degrees outside and the bus driver never apologized for the lack of air nor asked if we needed to pull over for water, restrooms, etc.. it was a 2 hour drive to the airport in Houston.... I was dehydrated and in pain when I reached Houston. The manager in Houston said the only thing he could do was give me a $10 voucher and instructed me to send United an email regarding my experience. Since IAH does not have free wifi I had to sit outside the United Club to pick up their wifi from them... it's been over a week and I still have not received a response from my complaint... when I called customer service today I was put on hold several times only to be told they would have to call me back. When I spoke to the supervisor he could not transfer me to anyone else above him, apparently Mr. Palo Cruz does NOT deal with customers as directed by Lance (employee J5) the only other way to have this issue reconcilled was for them to call me back after they reach customer care who apprently does not work weekends! May I add, I was issued a boarding pass that indicated FLIGHT NUMBER... When I called customer service it indicated: "are you calling regarding FLT # from BEAUMONT TO HOUSTON" etc. NOTHING ever said BUS drive to HOUSTON.