Give or take, how long do you wait to receive your coins? At what point do you start to become suspicious?
When aim doing transaction of withdrawing sometimes my bitcoin and transfer to my local exchange for the purpose of long term investment its mostly cost of 48hrs,but that depend on the trading website you use,thats why sometimes i become suspecious if my transaction become successfull or not,and i thinks sometimes that my bitcoin will turn to nothing or trash because sometimes other exchange trading sites they will manually doing your transaction.