I contacted Mark Lamb through Telegram, in the end. Rather depressingly, he told me what every other exchange is saying....... "we are recruiting, so tickets can be answered quicker.....". I also got my original tickets answered, in full, at the same time.
In short that's really a bad support system which they do answer queries and tickets on a long period of time.I haven't any idea on coinfloor site but just like what others said here they are most likely legit but seeing on their support it will really give impact on their service. To op, just keep on sending tickets and if you like make it spam so that if they did already see the message they will prioritize you first 
Just a friendly suggestion and don't take it serious too much. I know the feeling of pending deposits.