Why are some people complaining

you just CANT trade thousands of dollars without verification. What if you"re terrorist, money launderer.... what did you guys expect??
thats not the problem.... i have 21 btc there now. they have all from my side... my ID my Driver lic. and all basic informations.. and i give them over a month of time.
a answer with the problem and all is fine but i got nothing, so for me its scam nothing more...