I can't say if those replies you got here are legitimate people who used your exchange or there's one person behind all of those accounts. But I'll trust more those DT's than a bunch of newbies giving positive reply although you already have a lot of accusations about your operations.
Come on mate. ChangeNow is a scammer and DT has tagged him already. All of these accounts are either belong to changenow or he has hired the all time shit service- ANN Bump Service.
To everyone, please check his feedback. Don't use this exchange or you will be scammed.