The big point is if this company was truly on the up and up then they would refund any of their investors who want their hard earned money back. That would be good business ethics. They are not doing this. This is what scammers do.
Something tells me that you seems to have an agenda behind this. You keep calling them a "scammer", please define scam.
1. Would a scammer have a face to face interview?
2. Do they not have any product?
3. Are they not responding to any query e.g. customer support etc?
4. Do they not have a legit company?
Either you have hidden agenda behind these attacks or you are having a delusion. People are also not stupid to recognise flaws and yes there needs improvement. How do you do improvement without giving them benefit of doubt or time. First of all, Centra did not in any way FORCED anyone to invest, they have an idea and a product and it is not an original idea, yes. They admit it. The way you are putting it sounds like other alt coins are scam.
It is becoming weird with your repetitive argument etc. Everyone is watching. I dont know about others but i feel there is something behind all this. In addition to that, your frequent posts suggest that you definitely not new in btt and why not use your original username. Its like you do not have balls to use your own username to come here but using a new account to attack this, cowards do that (forgive my language). Like i said, it's weird and i firmly believe you are up to something? Extortion maybe?