ADP Account Executive interview questions

Never have I interviewed for an employer that led me down a hole of 5 interviews in the span of 2 weeks, to be told the position was filled. I literally did the final "all day interview" where you have two morning interviews then an afternoon presentation to then not get the offer. After requesting feedback, I spoke with the VP that said they filled the position DAYS AGO. I literally interviewed for a position that WAS FILLED. Who does that?

Started with a short phone call with a recruiter, then a 30 minute long video chat with the VP of sales for the region, then an hour long roleplay interview, where you are expected to sell the ADP product.