FIS NET Developer interview questions

Very poor interview experience with FIS, Very first time in 2021 when I gave the interview I cleared the interview they had taken all required documents but still they didn't give the offer letter instead when I already joined another organization then they were asking salary part negotiation and job location. Second time when I gave interview recently, my interview goes well when their architect has the doubt on my SQL query then I asked if we write this way also it will give the output what you are expecting. I gave the two queries even when architect said can we do without top keyword. But I really don't know even interview goes well there is no proper response like why they are not going to pursue further. Very disappointed. Don't waste time to give interviews there. They are just wasting the candidate time.