People trust Google play, hence it is very wrong to expose them to fraud. Google must ensure that they list only certified application. The application owners must undergo some certification process before their product will be listed in Google.
I could have been a victim as well if I have anything to do with poocoin, Have always trusted google playstore until now. If the app review cant be altered, everyone should make a low rating of the app with poor review, stating the app as fake. It should also be reported to the poocoin team, to take step to get google team informed as soon as possible.