So recently I've been dealing with a spammy competitor. I worked hard on getting keywords to get my listing to rank and move up and all of a sudden after winning the top bid for a while on PPC for my keyword, I noticed something weird. My ACOS% was going higher and my budget began filling up in less than an hour. I told Amazon about it but they secretly resolved the case(probably did nothing). So today i decided to re-run my campaign with one keyword as the focus. I set my top bid to 3.00. I was number 1 on page 1 for literally 2 mins before being kicked off to the 2nd page. I went as far as to set the bid to 20.00 dollars(just to test what the high bid was) and I didn't move an inch. What would you do in this situation? I'm already knee-deep spending ad money on this guy. How would you handle it?