This is another example of why we need a customer bill of rights for airline travel. It is awful you bought a product and United just refuses to honor what you paid for even with miles. What a scam! There should be protections for the customer that United has to rebook you in the same class on any airline that has available seats especially for a mechanical that is their issue.

I don't think they will do much. This is the problems with mergers. We have less choice and United has very little incentive to treat you well. I would still complain to the DOT so it is recorded.