Rochester, MN flight delayed 1 hour and 30 minutes. I do than drove to MINNEAPOLIS, MN instead. I was told if I make it on time to my gate, even though I didn’t take my connecting flight to get to MSP I would still be able to get on while handed a seat request. While I got to my gate to check in a bag and get on sooner I was rudely declined and told because of the ticket I have I no longer have a confirmed seat. After explaining what was said prior and what happened, I was told I have 3 people ahead of me. I would be number four to board if any seats were left. Well, number four came along and I was now told I was number SIX! Of course no more seats were available come than, and now I’m waiting for the next flight it automatically booked me for. EVEN THOUGH I was told I would be able to get on the first one! I am furious! The attendant at the gate was no help, just had a rude attitude and in fact didn’t let me explain to her the situation until she found it out herself and she told me exactly what I tried telling her in the first place. She was not cooperative, nor respectful, nor helpful!