Yoti JavaScript Developer interview questions

The process was a one stage interview at Yoti's offices in West London. The face-to-face interview was conducted by a Solution Architect and a JavaScript Developer. The interview went well and feedback on my technical and cultural fit for the company was very positive but Yoti felt that because I mentioned a salary increase during the interview that I wasn't suitable for the position. The salary range on offer was far in excess of what I currently earn. After some back and forth Yoti offered me the position but at the same salary I'm currently on. I turned the role down as their actions made no sense. If they wanted to hire me then I figured why not at least offer a token pay increase to show me that they were keen to employ me. Their actions felt verging on spiteful and I couldn't see past that to continue with the process.