I've seen few projects that decieved investors into thinking that they will list on binance or okex and Kucoin without these exchanges confirmation, my advice is once a project claim they are going top exchange do not hesitate to go to the top exchange social media, if the listing is legit the exchange will atleast say something about it. Wise up
Common scenarios coming from different projects. 
That is very common already especially for those projects that will end up being a scam or a dead coin.
Some of the project developers really deceive not only the investors but also the bounty hunters who helped them in advertising their project. The best thing to do with this is just not to invest on it or don't join in their bounty campaign.
Don't support their project if you are seeing some fishy moves coming from them like what you said that they will be listed on popular exchanges but the truth is it isn't. Asking from their customer support or developers can also help too with exchange listings.