Had a second interview with a company & it went very well, one of the supervisor's even complimented me on what a great interview it was. Less than 2hrs later they called and wanted to make me an offer, then proceeded to tell me that there was a mistake made in the first interview, they stated my previous salary was in the range of this current salary range, when in fact the actual salary range is a lot less. I feel like this was a huge mistake on thier part, my question is what would you do?